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:
[48.122, -2.158, 12.547, -39.257, -62.936, 120.37, 133.697, 68.132, 93.801]

Ex Output:
41.369


Ex Input:
[179.144, 114.883, -6.86, 137.104, 4.024, 55.61, 169.274, -60.246, 66.322, -92.91]

Ex Output:
56.634


Ex Input:
[-46.263, 155.924, 109.247, -33.261, 221.933, 21.841, -77.08, -89.305]

Ex Output:

32.88