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

Ex Output:
45.959


Ex Input:
[38.343, 177.478, 120.174, -74.923, 98.159]

Ex Output:
71.846


Ex Input:
[64.125, 54.204, 66.227, 80.319, -59.304, 229.945, 41.394]

Ex Output:

68.13