what is the sum of the multiples of 3 from 33 to 60 , inclusive ?
"the formula we want to use in this type of problem is this : average * total numbers = sum first , find the average by taking the sum of the f + l number and divide it by 2 : a = ( f + l ) / 2 second , find the total numbers in our range by dividing our f and l numbers by 7 and add 1 . ( 60 / 3 ) - ( 33 / 3 ) + 1 multiply these together so what we show average * total numbers = sum ( 33 + 60 ) / 2 * ( 60 / 3 ) - ( 33 / 3 ) + 1 = sum 93 / 2 * 10 = 465 a"
multiply(divide(add(subtract(60, const_3), add(33, const_2)), const_2), add(divide(subtract(subtract(60, const_3), add(33, const_2)), 3), const_1))