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      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxLiabilities" xlink:label="ifrs-full_DeferredTaxLiabilities" xlink:type="locator"/>
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      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTaxLiabilitiesNoncurrent" xlink:label="ifrs-full_CurrentTaxLiabilitiesNoncurrent" xlink:type="locator"/>
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                            weight="1.0"
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      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_OtherNoncurrentNonfinancialLiabilities" xlink:label="ifrs-full_OtherNoncurrentNonfinancialLiabilities" xlink:type="locator"/>
      <link:calculationArc
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                            order="60.0"
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                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:label="ifrs-full_NoncurrentRecognisedLiabilitiesDefinedBenefitPlan" xlink:type="locator"/>
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                            order="61.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentFinancialLiabilities" xlink:label="ifrs-full_NoncurrentFinancialLiabilities" xlink:type="locator"/>
      <link:calculationArc
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                          xlink:from="ifrs-full_NoncurrentLiabilities"
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      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentAssets" xlink:label="ifrs-full_NoncurrentAssets" xlink:type="locator"/>
      <link:calculationArc
                          xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item"
                          xlink:from="ifrs-full_Assets"
                          xlink:to="ifrs-full_NoncurrentAssets"
                            order="10.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentAssets" xlink:label="ifrs-full_CurrentAssets" xlink:type="locator"/>
      <link:calculationArc
                          xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item"
                          xlink:from="ifrs-full_Assets"
                          xlink:to="ifrs-full_CurrentAssets"
                            order="20.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="815600E546497667D288-2021-12-31.xsd#ext_AttivitàPossedutePerLaVendita" xlink:label="ext_AttivitàPossedutePerLaVendita" xlink:type="locator"/>
      <link:calculationArc
                          xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item"
                          xlink:from="ifrs-full_Assets"
                          xlink:to="ext_AttivitàPossedutePerLaVendita"
                            weight="1.0"
                            order="21.0"
                          xlink:type="arc"/>
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   <link:calculationLink xlink:role="https://www.italmobiliare.it/xbrl/role/all/ias_1_role-210000" xlink:type="extended">
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentAssets" xlink:label="ifrs-full_NoncurrentAssets" xlink:type="locator"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_PropertyPlantAndEquipment" xlink:label="ifrs-full_PropertyPlantAndEquipment" xlink:type="locator"/>
      <link:calculationArc
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                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_PropertyPlantAndEquipment"
                            order="10.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentProperty" xlink:label="ifrs-full_InvestmentProperty" xlink:type="locator"/>
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                          xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item"
                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_InvestmentProperty"
                            order="20.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_Goodwill" xlink:label="ifrs-full_Goodwill" xlink:type="locator"/>
      <link:calculationArc
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                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_Goodwill"
                            order="30.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:label="ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:type="locator"/>
      <link:calculationArc
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                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_IntangibleAssetsOtherThanGoodwill"
                            order="40.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:label="ifrs-full_InvestmentAccountedForUsingEquityMethod" xlink:type="locator"/>
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                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_InvestmentAccountedForUsingEquityMethod"
                            order="50.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentReceivables" xlink:label="ifrs-full_NoncurrentReceivables" xlink:type="locator"/>
      <link:calculationArc
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                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_NoncurrentReceivables"
                            order="80.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_DeferredTaxAssets" xlink:label="ifrs-full_DeferredTaxAssets" xlink:type="locator"/>
      <link:calculationArc
                          xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item"
                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_DeferredTaxAssets"
                            order="100.0"
                            weight="1.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="815600E546497667D288-2021-12-31.xsd#ext_CreditiVersoDipendentiNonCorrenti" xlink:label="ext_CreditiVersoDipendentiNonCorrenti" xlink:type="locator"/>
      <link:calculationArc
                          xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item"
                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ext_CreditiVersoDipendentiNonCorrenti"
                            weight="1.0"
                            order="101.0"
                          xlink:type="arc"/>
      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_NoncurrentFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome" xlink:label="ifrs-full_NoncurrentFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome" xlink:type="locator"/>
      <link:calculationArc
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                          xlink:from="ifrs-full_NoncurrentAssets"
                          xlink:to="ifrs-full_NoncurrentFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome"
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                            order="102.0"
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      <link:calculationArc
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                          xlink:from="ifrs-full_CurrentAssets"
                          xlink:to="ext_AltreAttivitàCorrentiInclusiGliStrumentiDerivati"
                            weight="1.0"
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                          xlink:type="arc"/>
      <link:loc xlink:href="815600E546497667D288-2021-12-31.xsd#ext_PartecipazioniObbligazioniECreditiFinanziariCorrenti" xlink:label="ext_PartecipazioniObbligazioniECreditiFinanziariCorrenti" xlink:type="locator"/>
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                          xlink:from="ifrs-full_CurrentAssets"
                          xlink:to="ext_PartecipazioniObbligazioniECreditiFinanziariCorrenti"
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                          xlink:to="ifrs-full_Inventories"
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      <link:loc xlink:href="http://xbrl.ifrs.org/taxonomy/2020-03-16/full_ifrs/full_ifrs-cor_2020-03-16.xsd#ifrs-full_CurrentTradeReceivables" xlink:label="ifrs-full_CurrentTradeReceivables" xlink:type="locator"/>
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                          xlink:from="ifrs-full_CurrentAssets"
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                          xlink:from="ifrs-full_CurrentAssets"
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                          xlink:to="ifrs-full_Equity"
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                            weight="1.0"
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                          xlink:from="ifrs-full_EquityAndLiabilities"
                          xlink:to="ifrs-full_Liabilities"
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                          xlink:from="ifrs-full_EquityAndLiabilities"
                          xlink:to="ifrs-full_LiabilitiesIncludedInDisposalGroupsClassifiedAsHeldForSale"
                            weight="1.0"
                            order="21.0"
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                          xlink:from="ifrs-full_Equity"
                          xlink:to="ifrs-full_EquityAttributableToOwnersOfParent"
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                            weight="1.0"
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                          xlink:from="ifrs-full_Equity"
                          xlink:to="ifrs-full_NoncontrollingInterests"
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   <link:calculationLink xlink:role="https://www.italmobiliare.it/xbrl/role/all/ias_1_role-210000" xlink:type="extended">
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                          xlink:from="ifrs-full_EquityAttributableToOwnersOfParent"
                          xlink:to="ifrs-full_TreasuryShares"
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