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: [-780, -427, 965, 112, 340, -346, -723, 295, -400, -128, 434, -446, 534, -509]

[-780, -430, 960, 110, 340, -350, -720, 300, -400, -130, 430, -450, 530, -510]