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: [537, 879, -337, 329, -479, -630, 881, -341, 994, 100, -21, -657, 879]

[540, 880, -340, 330, -480, -630, 880, -340, 990, 100, -20, -660, 880]