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: [305, -3, -922, -355, -133, -730, -106, -144, 96, 957, -787, 699, -93, -408, 479]

[300, 0, -920, -360, -130, -730, -110, -140, 100, 960, -790, 700, -90, -410, 480]