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: [-142, -504, -648, 89, 618, -805]

SOLUTION: [-140, -500, -650, 90, 620, -800]

PROBLEM: [389, -705, -441, 796, -543, -569, -423, -55, -495]

SOLUTION:
[390, -700, -440, 800, -540, -570, -420, -60, -500]