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: [-809, -252, -584, -808, -496, 877, 730, -276, 834, -2, -257, 986, 26, -475]

[-810, -250, -580, -810, -500, 880, 730, -280, 830, 0, -260, 990, 30, -480]