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:
[-2.772, 225.483, 211.749, 45.779, -82.623, 229.799, 107.783, 64.653]

Ex Output:
99.981


Ex Input:
[-61.905, -98.66, 90.472, 237.317, 5.243, 196.933]

Ex Output:
61.567


Ex Input:
[39.443, 144.071, 28.879, 232.097, -87.608, -97.906]

Ex Output:

43.163