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:
[127.703, -82.203, 53.438]

Ex Output:
32.979


Ex Input:
[-41.714, 218.588, 49.769, 142.519, 179.776, -99.226, 224.69, 191.642]

Ex Output:
108.256


Ex Input:
[136.816, 121.886, 38.032, 81.322, -0.781, 112.95, 49.478, 219.21, -42.397]

Ex Output:

79.613