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:
[208.757, -63.857, 124.458, 25.069, -39.093, -85.924, 112.747]

Ex Output:
40.308


Ex Input:
[-44.471, 208.445, 208.318, -34.134]

Ex Output:
84.54


Ex Input:
[-60.466, 109.906, 198.964, 97.457, -70.924, -46.929, 55.528, 147.605]

Ex Output:

53.893