one - third less than 15 % of 180 is equal to :
"lots of ways to tackle this . 15 % of 180 = 27 1 / 3 of 27 = 9 so , 1 / 3 less than 27 is equal to 27 - 9 = 18 answer : a"
subtract(multiply(divide(15, const_100), 180), multiply(divide(const_1, const_3), multiply(divide(15, const_100), 180)))