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: [834, -116, 456, -809, 721, 618, -545, -432, -457, -658, 668, 667, -179, 715, 273]

[830, -120, 460, -810, 720, 620, -540, -430, -460, -660, 670, 670, -180, 720, 270]