Definition: In this task you will be given a list of numbers and you need to find the mean (average) of that list. The mean of a list can be found by summing every number in the list then dividing the result by the size of that list. The output should be rounded to 3 decimal places.
Input: [82.517, -30.082, 53.185, -65.071, 2.246, 182.289, 20.654, -49.08, 127.627, -44.969]

27.932