It’s okay to not be good at math.
Not everyone is good at math.
Intelligence is not measured by how good or bad a person is at math.
IT IS OKAY TO NOT BE GOOD AT MATH.
I wish you would write a fic where the ex-Vengers are hanging around Wakanda post Civil War talking and one of them wishes Tony never became Iron Man. Wanda decides to grant that wish and they end up in a universe where Iron Man isn't a thing, a world where Tony Stark survived Afghanistan but never made the armor. Bonus points if Stane was able to lock him out of Stark Industries and Tony disappeared from the public eye afterward.