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: [-407, 496, 416, -334, 158, -98, -210, -318, 360, 299, -618, -521]

[-410, 500, 420, -330, 160, -100, -210, -320, 360, 300, -620, -520]