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: [-945, 162, -957, 115, -87, 929, 321, 373, 532, 315, 956, -997, -311, 18]

[-940, 160, -960, 120, -90, 930, 320, 370, 530, 320, 960, -1000, -310, 20]