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:
[-89.59, -15.783, 35.306, 46.851, 97.275, 19.027, 200.372, 62.551]

Ex Output:
44.501


Ex Input:
[49.035, -81.115, 27.419]

Ex Output:
-1.554


Ex Input:
[168.988, -30.238]

Ex Output:

69.375