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: [-829, -264, 498, -788, -540, 947, -795, 247, 834, 577, -585, -725, 22, 708, 220]

[-830, -260, 500, -790, -540, 950, -800, 250, 830, 580, -580, -720, 20, 710, 220]