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: [735, -808, -528, 204, 396, -183, 400, 299, 838, 894, -648, -938, -421, 137]

[740, -810, -530, 200, 400, -180, 400, 300, 840, 890, -650, -940, -420, 140]