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: [-816, 217, -708, -513, 474, -602, 110, -456, -956, 252, 399]

[-820, 220, -710, -510, 470, -600, 110, -460, -960, 250, 400]