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: [300, -280, -420, -748, 573, 159, -850, -875, -50, 652, 151, 89, -508, 262]

[300, -280, -420, -750, 570, 160, -850, -880, -50, 650, 150, 90, -510, 260]