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:
[182.852, 102.398, 200.428, -71.943, 50.578, -59.389, 0.465]

Ex Output:
57.913


Ex Input:
[-27.872, -9.249, 218.646, -32.0, 49.715, 58.225, 118.489, 29.679, 31.407]

Ex Output:
48.56


Ex Input:
[124.506, -88.661]

Ex Output:

17.922