find the average of all numbers between 6 and 34 which are divisible by 5
"explanation : average = ( 10 + 15 + 20 + 25 + 305 ) = 1005 = 20 answer : option b"
divide(add(add(add(multiply(5, const_3), add(5, multiply(5, const_2))), multiply(5, const_4)), multiply(add(const_4, const_1), 5)), 5)