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:
[-68.429, 130.101, 45.673]

Ex Output:
35.782


Ex Input:
[-96.903, -1.489, 182.083, 196.779, -67.602, 202.143, -20.354, -24.817, 194.439]

Ex Output:
62.698


Ex Input:
[29.261, -75.606]

Ex Output:

-23.172