Calculate sum of numbers in a collection

So I reviewed those posts and I’m still stuck. Here is what I am working with:

This is the section of the workflow I am working on. The goal is to get each employees time entries for the given week, add the submitted time together, and store that total in a new list item on a different list. It successfully queries the list for each entry based on employee, but I am completely lost on how to get the sum of entered time.

To simplify: For each employee, get their time entries, add together all of the weekly regular hours entered, and update a corresponding list item in a different list with the full total. 

For each:

This is the list query to get their entries:

This is the math operation where I am stuck. The numbers I need to add together are all in a collection variable. Do I need to turn the collection into something else before this?
 

And this is the update item, which does work correctly when I tested the math operation using basic values. 

It worked! Thank you so much!