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: [729, 670, -54, 461, -149, 364, -972, 111, -36, 839, -308, -939]

[730, 670, -50, 460, -150, 360, -970, 110, -40, 840, -310, -940]