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: [-836, -857, -254, -660, 147, -307, -794, 730, -826, 462, 862, -947, -478, 926]

[-840, -860, -250, -660, 150, -310, -790, 730, -830, 460, 860, -950, -480, 930]