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: [720, -76, 19, 158, 76, -31, 454, 580, -989, 550, -163, -849, -830, -842, -874]

[720, -80, 20, 160, 80, -30, 450, 580, -990, 550, -160, -850, -830, -840, -870]