How can I use the inputs from a configurable list for calculating conditional inputs to that list and other fields?

Hi,

Unfortunately, it's not possible to calculate the values inside the configurable list widget.  The calculation values for Conditional Logic requires general form elements in the form builder. Same with the Form Calculation widget.

For your reference:

 How to Insert Text or Calculation into a Field Using Conditional Logic

How to Perform Form Calculation Using a Widget

Let us know if you need further assistance on your form requirements.