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: [-539, 465, 303, -59, 820, -495, -685, -978, -779, -945, 437, 823, 657, -383, 731]

[-540, 460, 300, -60, 820, -500, -680, -980, -780, -940, 440, 820, 660, -380, 730]