Estimate_Cost_Month_formula__c
    IF( ISBLANK( Estimate_Cost_Month__c ) ,  Estimate_Cost__c  /  Maintenance_Contract_Estimate__r.Contract_Range__c , Estimate_Cost_Month__c )
    false
    Estimate_Cost__c / Maintenance_Contract_Estimate__r.Contract_Range__c
    BlankAsZero
    
    18
    false
    2
    false
    false
    Currency