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: [633, 988, -669, -807, 603, -751, 371, -502, 294, 138, 600, -160, -503, -789, -812]

[630, 990, -670, -810, 600, -750, 370, -500, 290, 140, 600, -160, -500, -790, -810]