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: [-7, -300, -968, -372, 404, 632, -372, 854, -285, 943, -28, 896, -12, 821]

[-10, -300, -970, -370, 400, 630, -370, 850, -280, 940, -30, 900, -10, 820]