Do you have manual calculation set? Check Tools>Options>Calculation, and
ensure the Automatic button is set.

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> Suppose if I type 'ABC' in 'A3' & 'DEF' in 'C4' on worksheet1 cells and
>
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> I type in any content. And it also just remain '0' even after I entered
> text in sheet1 A1. Can someone pls help?