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:
[48.462, -80.347, -19.649, 180.664, -24.117]

Ex Output:
21.003


Ex Input:
[-71.745, -18.239, 214.837, -22.915, 180.841, -4.641]

Ex Output:
46.356


Ex Input:
[-33.421, 234.099, -68.856, 228.909, -91.024, -21.115, -35.901, -59.716, 94.192, -68.154]

Ex Output:

17.901