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: [-860, 935, 3, -948, 806, -354, 621, 59, -271, 36, 484, 1]

[-860, 940, 0, -950, 810, -350, 620, 60, -270, 40, 480, 0]