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:
[-72.554, 9.809, 27.09, 190.698]

Ex Output:
38.761


Ex Input:
[14.587, 49.21, -21.274, -54.714, 243.935, 218.436]

Ex Output:
75.03


Ex Input:
[83.224, 62.198]

Ex Output:

72.711