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: [-278, -323, -292, -572, 393, 434, -945, -145, 241, -549, -44, 683, 713, -431, 839]

[-280, -320, -290, -570, 390, 430, -940, -140, 240, -550, -40, 680, 710, -430, 840]