Definition: In this task you will be given a list of integers. You should round each integer to the nearest tens place. That means you should round the number to the nearest multiple of 10.
Input: [-851, 419, 362, -990, -284, -59, -476, -227, 540, 418, 596, 461, 731, 921, 635]

[-850, 420, 360, -990, -280, -60, -480, -230, 540, 420, 600, 460, 730, 920, 640]