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: [-256, -694, 644, 786, -201, -465, -840, 832, -785, -907, 910, 267, -580]

[-260, -690, 640, 790, -200, -460, -840, 830, -780, -910, 910, 270, -580]