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.

Ex Input:
[-9.301, -10.629, 88.777, 68.965]

Ex Output:
34.453


Ex Input:
[-63.278, 115.92, 179.699, 73.157]

Ex Output:
76.374


Ex Input:
[50.385, -43.565, 52.271, 204.418]

Ex Output:

65.877