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: [856, 507, -557, -825, 47, 297, 112, 123, -998, -55, -71, 521, 709, -308]

[860, 510, -560, -820, 50, 300, 110, 120, -1000, -60, -70, 520, 710, -310]