How to fix an error “The value entered does not match the format of the field [FIELDNAME]”

Need help!

I have created a fillable PDF with sections as in the attached file.

The problem I am having is that every time I enter a value in any input field, I am getting an error message “The value entered does not match the format of the field [FIELDNAME]” in the calculated fields. I checked the definitions of the calculated fields and couldn’t find anything wrong.

One thing I noticed is that the error messages decrease as I ignore them and continue with the rest of the rows. Could this be because the numerator or denominator is zero (or blank)?

I hope someone can help me with this problem.

Thank you!