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: [475, 441, -91, 630, 509]

SOLUTION: [480, 440, -90, 630, 510]

PROBLEM: [808, 458, -330, 533, -27, -543, -638, -129, 570]

SOLUTION: [810, 460, -330, 530, -30, -540, -640, -130, 570]

PROBLEM: [842, -798, 585, -423]

SOLUTION:
[840, -800, 580, -420]