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:
[214.656, -82.183, 105.038, -34.9, -44.836, 143.236, 183.045, 160.483, 34.398]

Ex Output:
75.437


Ex Input:
[94.752, 94.081, 191.426]

Ex Output:
126.753


Ex Input:
[36.915, -90.664, 43.527, 134.093, -45.211, -99.342, -96.826]

Ex Output:

-16.787