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: [994, 652, -487, -989, 999, 537, 799, 252, -810, 261, 640, -50, -263, 388, -342]

[990, 650, -490, -990, 1000, 540, 800, 250, -810, 260, 640, -50, -260, 390, -340]