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: [-237, 212, -766, 172, 47, -144, -582, 242, -377, -399]

[-240, 210, -770, 170, 50, -140, -580, 240, -380, -400]