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:
[-19.13, 98.86, 158.686, 230.23]

Ex Output:
117.161


Ex Input:
[-90.8, -48.947, 70.645, 129.195, 6.14, 114.037, 192.758, 136.033, 117.431, 28.696]

Ex Output:

65.519