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:
[233.84, -38.337, 10.341, 195.901, 68.586, 214.429, 213.823, 88.799]

Ex Output:
123.423


Ex Input:
[199.728, -96.25, -77.714]

Ex Output:
8.588


Ex Input:
[95.545, -62.245, 64.933, -24.849]

Ex Output:

18.346