People try and use commas for this sort of clarification and are eviscerate for it.

With these sort of math problems, the rules are taught early and then all subsequent math is written in an unambiguous form.

Language has the oddity of going the other way around where the rules get more complex as a display for advanced skills.

My language teachers always told me it was bad form to use too much or even to nest parenthesis...

Then I found lisp...

We have them in written language, though?

Why (I don't see) not

Isn't that basically what commas are for?

This is why grammar is important, and "grammar nazis" are the only good kind of nazis.

https://lojban.org/publications/cll/cll_v1.1_xhtml-section-chunks/section-parentheses.html

Also https://xkcd.com/191/. Also https://vlasisku.lojban.org/xekce. Also https://www.youtube.com/watch?v=gv0QIbGc8i8.