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: [-264, -364, 814, -540, 864, -286, -668, -844, 148, 815, 918, 130, -671, -157]

[-260, -360, 810, -540, 860, -290, -670, -840, 150, 820, 920, 130, -670, -160]