Might share my unstructured work as well. It was designed to optimize your prov and/or discuss possible set ups per age with well calculated numbers. I've made a big mess of the formulas which are in hidden cells, but the functions I needed are there and seem to work (99+% accuracy).

Anyone who wants to use it, feel free to copy or download it.

https://docs.google.com/spreadsheets...p=docslist_api

It's no rocket science, but it helps me a lot.