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: [504, -407, 157, 750, 23, 221, -365, 317, -121, 618, 808, -987]

[500, -410, 160, 750, 20, 220, -360, 320, -120, 620, 810, -990]