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: [-22.937, 71.629, 248.76, 166.523, 130.644, 15.175, 117.075, 119.032]

105.738