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: [278, 855, 321, 13, 189, 244, 366, -176, 7, 638, -710]

[280, 860, 320, 10, 190, 240, 370, -180, 10, 640, -710]