How to use the number field in a Configurable list for calculation?

I am working on a form as a weekly report time for our labor.

See the work in progress file.

On page 2 , in the configurable list, the worker is supposed to detail his hours according to the activity done on site.

He has to get the possibility to add several activities (which should be a list of choices), this is why i use the Configurable list widget.

I would like to use the number field to make a calculation of the total and display it as summary on a page 3.

Could i do that with the widget or do i need to proceed in another way?

Thanks

Unfortunately, there's currently no way you can use any input from the configurable list widget into the calculation widget. Your workaround would be to use a textbox for the total hours. But this means that the input won't be dynamic since you'll have to manually add the fields in the form.