Calculations in Kobo form builder

Dear team,

I am new to using kobo form builder .

I generated few questions with two calculation questions. I am having issues with the last two calculation questions. Please see the attachment with (black circle) and assist me. Thank you.

Welcome back to the community, @arau25! It seems you’ve used the mathematical expression incorrectly. Try replacing / with div, which should resolve the issue. These support articles can further assist you in using calculation expressions.