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: [-495, -831, 473, 400, -272, 611, -34, -677, -518, 279, 866, -637, -490, 767, 980]

[-500, -830, 470, 400, -270, 610, -30, -680, -520, 280, 870, -640, -490, 770, 980]