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.
Input: [221, 500, -423, -996, 379, -670, 959, -554, 117, 697, -951, 445, 171, -999, 901]

[220, 500, -420, -1000, 380, -670, 960, -550, 120, 700, -950, 440, 170, -1000, 900]