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: [-146, 498, 660, -10, -400, -445, 389, -817, -347, -822]

[-150, 500, 660, -10, -400, -440, 390, -820, -350, -820]