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: [-17.038, 13.314, 15.266, 25.245, 221.697, 66.588, 224.63, 72.309, 232.85]

94.985