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:
[146.748, -23.736, 49.614]

Ex Output:
57.542


Ex Input:
[53.271, 224.646, -66.568, -23.058, -60.09, 178.437, -70.082, 131.116]

Ex Output:
45.959


Ex Input:
[202.886, -53.308, 202.839, -72.244, 114.795, 48.659]

Ex Output:

73.938