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: [721, -823, -259, -555, 855, -322, -943, -976, -920, 839, -597, -736, 116, 427, -676]

[720, -820, -260, -560, 860, -320, -940, -980, -920, 840, -600, -740, 120, 430, -680]