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: [-287, 73, -591, 381, -64, 162, 856, -328, -733, 690, 511, -206]

[-290, 70, -590, 380, -60, 160, 860, -330, -730, 690, 510, -210]