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: [639, 941, -169, 565, -902, 85, 900, -754, -419, 504, 340, -125, -48, -48, -621]

[640, 940, -170, 560, -900, 80, 900, -750, -420, 500, 340, -120, -50, -50, -620]