How can i make a math calc with Jotform?

I've been trying the sistem to make a simple adittion, to calc the results of some factors given within a table. Is it possible? Am i doing something incorrectly

Instead of trying with conditions, you can do this calculation with the Form Calculation Widget. Please look at this:
If this sample can help you, please follow these steps.
1. Firstly please remove old conditions.
2. Set the calculation values of your table elements.

3. Add a Form Calculation Widget into the form.
4. Add table elements into the Form Calculation widget. Please contact us if you have any questions.