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:
[108.822, 139.139, 130.938, 100.996, 155.361, 8.752, 221.639, -12.877]

Ex Output:
106.596


Ex Input:
[-64.231, 200.235, -9.547, -98.817, 222.577, 12.8, 214.705, 122.883, 216.246, 113.126]

Ex Output:
92.998


Ex Input:
[-22.313, 92.492, 71.429, 8.979, 199.21, 140.229, 101.187, 35.847, 163.828, 17.24]

Ex Output:

80.813