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:
[195.019, 144.893, 32.821, -21.855, 136.755]

Ex Output:
97.527


Ex Input:
[211.927, 190.941, -74.44, 7.991, -80.894, 48.291, 127.383, -51.774]

Ex Output:
47.428


Ex Input:
[93.989, 98.225, -28.896, 140.887, 46.331, 17.396, 174.394, 40.637]

Ex Output:

72.87