It is a matter of which convention you use, not math itself.
So being a “math genius” is neither here nor there.
A close analogy:
What date is 5/6/2019?
It depends on where you learned dates.
The answer is May 6, 2019.
The answer is also June 5, 2019.
“It is a matter of which convention you use, not math itself.”
As I stated a few posts earlier, it depends whether you use BODMAS or PEMDAS. The elementary & high schools in the U.S. are still using PEMDAS. If you want to pass exams to get into college, you use PEMDAS.
Bingo. Well done.