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: [-391, -784, 278, -850, 471, 909, 402, -623, 505, 565]

[-390, -780, 280, -850, 470, 910, 400, -620, 500, 560]