find the average of first 4 multiples of 11 ?
"average = ( 11 + 22 + 33 + 44 ) / 4 = 27.5 answer is c"
divide(add(add(add(4, const_1), add(add(4, const_1), const_2)), add(subtract(11, 4), subtract(11, const_2))), 4)