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: [-28.169, -40.087, 109.373, 93.992, 159.75, 126.941, 80.962, 130.541, 184.538, 102.057]

91.99