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: [-257, 99, 763, 905, 443, 923, 229, 165, 982, 270, -998, -754, -486, -176, 0]

[-260, 100, 760, 900, 440, 920, 230, 160, 980, 270, -1000, -750, -490, -180, 0]