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: [337, -541, -868, -879, -236, -839, 417, -321, -267, -485, 186, 4, 589, 546]

[340, -540, -870, -880, -240, -840, 420, -320, -270, -480, 190, 0, 590, 550]