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: [688, 667, 260]

SOLUTION: [690, 670, 260]

PROBLEM: [-160, 391, 826]

SOLUTION: [-160, 390, 830]

PROBLEM: [394, 111, 394, 446, -236, 773, 392, -404, -754, 41, -469, -413, 431, 477, 848]

SOLUTION:
[390, 110, 390, 450, -240, 770, 390, -400, -750, 40, -470, -410, 430, 480, 850]