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:
[48.462, -80.347, -19.649, 180.664, -24.117]

Ex Output:
21.003


Ex Input:
[-3.302, 23.685, 69.661, 74.979, -46.96]

Ex Output:
23.613


Ex Input:
[111.425, 127.677, 74.853, -53.703, 223.682, 38.362, 45.692, -14.275]

Ex Output:

69.214