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:
[-9.301, -10.629, 88.777, 68.965]

Ex Output:
34.453


Ex Input:
[211.292, 92.275, 128.423, 242.327, -54.053, 89.501, 64.784]

Ex Output:
110.65


Ex Input:
[24.467, -72.499, -34.299, 205.11, 194.261]

Ex Output:

63.408