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:
[21.723, 130.05, 75.095]

Ex Output:
75.623


Ex Input:
[126.198, -70.303]

Ex Output:
27.947


Ex Input:
[-44.467, 86.159, -43.999, 148.282, 177.87, 116.57, 129.645, 105.238]

Ex Output:

84.412