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:
[-4.749, 102.787, -45.229, 184.111, 221.888, 22.727, 20.887, 34.094]

Ex Output:
67.065


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:
[246.282, 231.815, 1.709, -51.234, -76.432, 21.802, 18.917, 106.734, 168.909, -67.647]

Ex Output:

60.085