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: [258, 686, -15, 95, -722, 788, -286, -777, 846, -344, -284, -615]

[260, 690, -20, 100, -720, 790, -290, -780, 850, -340, -280, -620]