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: [-647, -825, -630, 89, 848, 478, -646, -884, 209, -139, -471]

[-650, -820, -630, 90, 850, 480, -650, -880, 210, -140, -470]