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:
[219.336, -29.108, -41.612, 105.709]

Ex Output:
63.581


Ex Input:
[89.226, 241.396, 7.011, 114.867, 113.075, 103.559, 83.142, 188.743, -27.33, 180.773]

Ex Output:
109.446


Ex Input:
[163.252, 141.323, 146.698, 237.696, -32.5, 190.611, -32.68, 94.197, 29.408]

Ex Output:

104.223