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SUBMIT YOUR IDEAI started out attempting an iterative macro but, still being new to macros, I couldn't figure out how to get the new count values to replace in the iterations. I ended up using multi-row formulas to solve. I'll be sure to check out all of the iterative macro solutions to hopefully get a better understanding of how those work.
Solution attached. I used a running total and multi-row formula tool rather than an iterative macro.
I used two multi-row formulas instead of a running total, which is quite an interesting idea.