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:
[82.748, 43.804, -13.469, 226.705, -7.478]

Ex Output:
66.462


Ex Input:
[-48.12, 192.63, 32.454, 132.703, -26.044, 140.006, -8.624, 38.438]

Ex Output:
56.68


Ex Input:
[66.612, 66.507, 215.587, 188.831, -74.681, 223.979, 148.364, 28.922]

Ex Output:

108.015