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: [-307, 55, -418, -477, -770, 632, 122, 447, -352, -962, 720, 998, -605]

[-310, 60, -420, -480, -770, 630, 120, 450, -350, -960, 720, 1000, -600]