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:
[-4.749, 102.787, -45.229, 184.111, 221.888, 22.727, 20.887, 34.094]

Ex Output:
67.065


Ex Input:
[126.453, 169.516, 109.837, 208.695, 113.906, 56.894, 171.345, 126.81]

Ex Output:
135.432


Ex Input:
[-85.394, 191.995, 36.021, -88.24, 30.51, -31.699, 145.824, 245.796, -47.142, 234.563]

Ex Output:

63.223