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: [-512, 126, 557, 813, -597, -715, -829, -628, -691, 339]

[-510, 130, 560, 810, -600, -720, -830, -630, -690, 340]