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: [661, -307, 405, 167, -756, 254, -28, 346, -801, 817, -220, -813, 669, -884, -297]

[660, -310, 400, 170, -760, 250, -30, 350, -800, 820, -220, -810, 670, -880, -300]