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:
[16.256, 155.71, 43.059, -64.109, -42.445, 78.725, -12.941, 47.497]

Ex Output:
27.719


Ex Input:
[-17.604, 15.108, 34.328, -94.608]

Ex Output:
-15.694


Ex Input:
[-97.395, 147.999, 119.038, 163.381, 137.866, 85.121, 39.073]

Ex Output:

85.012