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:
[-92.0, 108.814, 164.207, 94.26, 33.74]

Ex Output:
61.804


Ex Input:
[226.287, 114.252, -53.47, 8.606, 234.708, -31.872, 163.615]

Ex Output:
94.589


Ex Input:
[152.092, 146.978, 206.202]

Ex Output:

168.424