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: [-409, -993, 71, -848, 675, 584, 471, 815, 25, 870, 821]

[-410, -990, 70, -850, 680, 580, 470, 820, 20, 870, 820]