find the sum of first 80 odd numbers
"explanation : n 2 = 802 = 6400 answer : option a"
add(divide(divide(80, divide(divide(divide(divide(divide(80, const_2), const_2), const_2), const_2), const_2)), const_2), add(const_1, sqrt(divide(divide(80, divide(divide(divide(divide(divide(80, const_2), const_2), const_2), const_2), const_2)), const_2))))