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: [40, 670, -357, 831, 807, 215, -4, -300, 535, -315, -44, 525, -375, -588, -523]

[40, 670, -360, 830, 810, 220, 0, -300, 540, -320, -40, 520, -380, -590, -520]