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: [639, -883, 728, -322, -898, -175, 163, 962, -618, -809, -655, -904, 590, -141, 594]

[640, -880, 730, -320, -900, -180, 160, 960, -620, -810, -660, -900, 590, -140, 590]