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: [-420, 823, -908, -754, -341, -44, 910, -561, -45, -380, 42, -353, 300, 342]

[-420, 820, -910, -750, -340, -40, 910, -560, -40, -380, 40, -350, 300, 340]