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: [-604, 976, 727, 392, -304, -42, 241, 392, -966, -480, -905, 537]

[-600, 980, 730, 390, -300, -40, 240, 390, -970, -480, -900, 540]