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: [118.554, 176.562, 33.122, 128.62, -40.387, 130.134, -95.38, 88.282, 179.758]

79.918