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:
[160.713, 125.985, 186.982, -94.178, 183.77]

Ex Output:
112.654


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

Ex Output:
71.846


Ex Input:
[-24.985, 84.811, -76.401, 18.334]

Ex Output:

0.44