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: [-39, 713, 667, 379, 878, 839, 745, -978, -907, 236]

[-40, 710, 670, 380, 880, 840, 740, -980, -910, 240]