How can I create a total hours worked column and preferably one that calculates things automatically

I have two forms that we would like to have a totals hours worked and would like to have it automated if possible plus keep the alignment correct, I seem to always have trouble with that if I add columns.

We have a Spreadsheet widget you can try instead: https://widgets.jotform.com/widget/spreadsheet 

Let us know if you need more help.