TASK 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.
PROBLEM: [820, 152, 394, 714, 638, -533, 776, 130, -994, 305, -989, -949, 171, -900, -460]

SOLUTION: [820, 150, 390, 710, 640, -530, 780, 130, -990, 300, -990, -950, 170, -900, -460]

PROBLEM: [-792, 991, 158, 782, 282, 43, -280, 581]

SOLUTION: [-790, 990, 160, 780, 280, 40, -280, 580]

PROBLEM: [507, 627, -862]

SOLUTION:
[510, 630, -860]