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: [660, 212, -636, 818, 699, 230, -549, -664, -530, 884, -12, -586, -107, 466, 435]

[660, 210, -640, 820, 700, 230, -550, -660, -530, 880, -10, -590, -110, 470, 440]