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: [-79.08, 77.577, 62.09, 60.486, -49.508, -20.214, 105.395, 201.783, 101.63, -22.429]

43.773