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:
[126.198, -70.303]

Ex Output:
27.947


Ex Input:
[-96.341, 77.453, 129.709, -32.339, 126.983, -59.527, -0.485]

Ex Output:

20.779