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:
[218.46, 7.937, 155.624, 82.813, 93.516]

Ex Output:
111.67


Ex Input:
[25.58, 99.319, 165.429]

Ex Output:
96.776


Ex Input:
[91.456, 16.428, 217.399, 13.594, -22.488, 4.119, 88.493]

Ex Output:

58.429