Literally the only thing you need to know is that * binds tighter than + and - and that * can be omitted. Everything else is obvious - I never used / but fractions instead, exponentiation is also visually indicated, the only counterexample I guess is some made up operations when doing group/ring theory but it’s all clearly explained anyways. Using “clear unambiguous syntax” as in () would actually make all formulas much longer and much less clear.