An ability to "understand, reason with, and apply mathematical and quantitative concepts in everyday life and
work"
dat's gained by
studying your a** off to learn large amounts of tedious arithmetic bu**s**t.
Just learning simple "adding, subtracting, multiplication, and division" skills is generally adequate for financial navigating in da modern world --- no need to overheat
yer brain or exhaust yer
patience with numerousy research!