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, 772, 279, -798, -763, 516, 996, -571, -228]

[640, 770, 280, -800, -760, 520, 1000, -570, -230]