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:
[-57.148, -59.655, 208.462, 223.004, 100.684, 188.569]

Ex Output:
100.653


Ex Input:
[-24.069, 49.942, -56.199, 147.337, 81.429, 198.62, -91.886, 33.842, -16.712, -51.661]

Ex Output:
27.064


Ex Input:
[-84.97, 158.563, 27.96, 41.849, -2.101, 35.984, 57.271, 148.387]

Ex Output:

47.868