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: [589, 123, 699, -206, 320, -1000, -3, 180, -549, 961, -899, -660]

[590, 120, 700, -210, 320, -1000, 0, 180, -550, 960, -900, -660]