**lasercorp**Is it possible to create an user input field that would be divided by a set field and display the result in a third field

example

**Product Price Yield CPT**q1338 200 10000 = Price x 1000 / Yield

product field is set by me

yield is set by me

user enters price filed

then CPT field performs calculation and displays result

Is this poosible and how is so?

thx,

Eric

- JotForm Support
**Mike_T**Thank you for contacting us.

Unfortunately, we do not have the custom calculations option.

However, I think that we can write a little Javascript code to perform the calculations. To use this work around you will have to use the form source embedding code. I am not sure if we can add the Javascript to correct the Total on some online payment form, but it should not be hard to add the calculation operations to simple text boxes.

If you would like to use mentioned work around, please get back to us with a link to the form.