if albert ’ s monthly earnings rise by 30 % , he would earn $ 598 . if , instead , his earnings rise by only 35 % , how much ( in $ ) would he earn this month ?
"= 598 / 1.3 ∗ 1.35 = 621 = 621 answer is a"
multiply(divide(598, add(const_1, divide(30, const_100))), add(const_1, divide(35, const_100)))