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: [177.053, 85.948, 179.772, 186.021, 93.115, 123.832, 96.246, -72.195, 98.396]

107.576