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:
[203.976, 106.117, 62.128, -89.428, 180.453, 155.566, 213.868]

Ex Output:
118.954


Ex Input:
[-38.715, 205.647, 66.034, 49.8, -92.051, 111.017, 149.689]

Ex Output:
64.489


Ex Input:
[-0.982, 43.502, 158.917, 211.201, -51.77, -52.54, -78.002, 51.215, 150.942]

Ex Output:

48.054