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: [-842, -642, -397, -973, 326, 440, 499, 469, -139, 392, -292, 966, 290]

[-840, -640, -400, -970, 330, 440, 500, 470, -140, 390, -290, 970, 290]