find the average of first 8 multiples of 5 ?
"average = ( 5 + 10 + 15 + 20 + 25 + 30 + 35 + 40 ) / 8 = 22.5 answer is d"
divide(add(add(add(8, const_1), add(add(const_4.0, const_1), const_2)), add(subtract(5, 8), subtract(5, const_2))), 8)