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: [311, -262, 21, -401, 990, -722, 187, 322, 37, -734, 99, 449, 902]

[310, -260, 20, -400, 990, -720, 190, 320, 40, -730, 100, 450, 900]