if 15 % of 30 % of 50 % of a number is 126 , then what is the number ?
"let the number be a given , 15 / 100 * 30 / 100 * 50 / 100 * a = 126 = > 3 / 20 * 3 / 10 * 1 / 2 * a = 126 = > a = 10 * 20 * 10 * 2 = 5600 . answer : b"
divide(126, multiply(multiply(divide(50, const_100), divide(30, const_100)), divide(15, const_100)))