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: [-21, 29, 362, -924, -389, 437, 576, -518, 565, 225, -658, -841, -571]

[-20, 30, 360, -920, -390, 440, 580, -520, 560, 220, -660, -840, -570]