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: [-333, 50, 583, 900, -419, -134, -19, 621, -132, -834, 21, 612]

[-330, 50, 580, 900, -420, -130, -20, 620, -130, -830, 20, 610]