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: [521, 584, -341, -459, 484, -861, 586, -560, -557, -489, 458, -664]

[520, 580, -340, -460, 480, -860, 590, -560, -560, -490, 460, -660]