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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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I did check your form "HFC SHIFT CLOSEOUT FORM" (#40304707968156) and did not find that you have added any calculation functionality to your form. You have not added any "Form Calculation" widget in your form nor you have added any calculation to update the form field values.
Can you please explain how are you actually trying to do the calculation in your form? You should actually add the "Form Calculation" widget or add condition to "Update a form field value" to do the calculation in your form. The following guides should help you:
Hope this helps.
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