Sum formula

%3CLINGO-SUB%20id%3D%22lingo-sub-910973%22%20slang%3D%22en-US%22%3ESum%20formula%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-910973%22%20slang%3D%22en-US%22%3E%3CP%3EPlease%20help%20me%20how%20can%20I%20add%20multiple%20cells%20having%20dates%20entered%20through%20auto%20date%20stamp%20formula.%3C%2FP%3E%3CP%3EAnd%20How%20can%20I%20use%20sumif%20or%20sumifs%20formulas%20on%20cells%20having%20auto%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-910973%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EExcel%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E
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Occasional Contributor

Please help me how can I add multiple cells having dates entered through auto date stamp formula.

And How can I use sumif or sumifs formulas on cells having auto