what is the largest 4 digit number exactly divisible by 72 ?
"largest 4 digit number = 9999 9999 ÷ 72 = 138 , remainder = 63 hence largest 4 digit number exactly divisible by 88 = 9999 - 63 = 9936 answer : e"
multiply(floor(divide(power(const_10, 4), 72)), 72)