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: [79.79, 14.945, 108.268, 146.943, 5.318, 173.729, 183.337, 14.842]

90.896