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: [-6, 251, 455, -441, 21, 894, -445, 864, -250, 323, 993, 335, 979, -157, 847]

[-10, 250, 460, -440, 20, 890, -440, 860, -250, 320, 990, 340, 980, -160, 850]