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: [-399, -875, 104, -22, -709, -834, -233, 702, -386, 862, 356, 618, 95, -627, -964]

[-400, -880, 100, -20, -710, -830, -230, 700, -390, 860, 360, 620, 100, -630, -960]