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:
[-79.521, 169.962, 120.036, -71.612, -53.261, -90.734, -35.559, 140.419, 25.016]

Ex Output:
13.861


Ex Input:
[246.282, 231.815, 1.709, -51.234, -76.432, 21.802, 18.917, 106.734, 168.909, -67.647]

Ex Output:
60.085


Ex Input:
[48.85, 54.649, 209.159]

Ex Output:

104.219