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:
[36.34, -16.727, 140.541, 127.454, -94.11, -74.52, 96.179, -9.121, -65.54]

Ex Output:
15.611


Ex Input:
[185.805, 8.01, 151.056, 35.572, 51.884, 217.1, -0.547, 8.171]

Ex Output:
82.131


Ex Input:
[71.325, 51.239, 103.459, 63.351, -15.961, 196.869, 56.811]

Ex Output:

75.299