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: [309, -658, -583]

SOLUTION: [310, -660, -580]

PROBLEM: [317, 287, -861, -105, -570, 317, 888, -230, -359]

SOLUTION: [320, 290, -860, -100, -570, 320, 890, -230, -360]

PROBLEM: [345, 781, 839, -916, -115, -920, -4, 823, 961, -653, -57, 932, 87, -618, -104]

SOLUTION:
[340, 780, 840, -920, -120, -920, 0, 820, 960, -650, -60, 930, 90, -620, -100]