How to add calculation in configurable list widget?

i am making an expense report form so i need to calculate some values on the list and make some maths operations

Hello,

Unfortunately no. It is currently not possible to add calculation in configurable list widget. 

You may like to take a look at our "Spreadsheet" widget which will allow you to add math functions to do the calculation.

Hope this helps.

Do get back to us if you have any questions.

Thank you!