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: [-688, 657, 835, 186, -358, -482, -148, -727, 465, -529, -519, -329, -266, 452, 180]

[-690, 660, 840, 190, -360, -480, -150, -730, 460, -530, -520, -330, -270, 450, 180]