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: [457, -507, -721, 0, -908, 34, 950, -810, -849, 988, -906, 978, -643]

[460, -510, -720, 0, -910, 30, 950, -810, -850, 990, -910, 980, -640]