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: [-311, 380, -338, -913, -323, 690, -436, 678, -835, -712, -635, -405, 828]

[-310, 380, -340, -910, -320, 690, -440, 680, -840, -710, -640, -400, 830]