I have to believe it’d be possible somehow, but there’s not readymade already done solution for it that I’m aware of. I know there are a number of filters/actions that could be used to manipulate field values before/after save, and before/after fetching saved values. With those, you could do whatever you need with them, including manually updating other meta fields.
That said, it’d perhaps be easier to just do the math on the frontend before the display of the value(s).
Mmmm, Sure the frontend does get that done easily.
Thanks.
