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:
[-1.833, 218.553, -61.132, -19.027, 87.034]

Ex Output:
44.719


Ex Input:
[188.006, 117.583, 51.262]

Ex Output:
118.95


Ex Input:
[195.822, -74.599, -35.447]

Ex Output:

28.592


