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: [131.352, -5.501, -16.508, 113.088, 182.755, 69.36, 51.637, 147.465, -15.197, 92.215]

75.067