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: [584, 4, -3, -673, 702, 679, 534, 355, -50, 560, 174, -647, 670, -939]

[580, 0, 0, -670, 700, 680, 530, 360, -50, 560, 170, -650, 670, -940]