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:
[243.697, 165.796, 114.518, 207.298, 191.227]

Ex Output:
184.507


Ex Input:
[166.967, 154.381, -19.741, 157.124]

Ex Output:
114.683


Ex Input:
[55.788, -77.663, 41.628, -89.2]

Ex Output:

-17.362