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: [837, 587, 211, -685, -591, 317, 285, -145, 545, -613, 11, -793, 393, -896, -960]

[840, 590, 210, -680, -590, 320, 280, -140, 540, -610, 10, -790, 390, -900, -960]