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:
[113.021, 101.946, -14.79, -8.555, -59.095, -74.169, 80.193, 157.87, 26.321, -19.87]

Ex Output:
30.287


Ex Input:
[203.976, 106.117, 62.128, -89.428, 180.453, 155.566, 213.868]

Ex Output:
118.954


Ex Input:
[85.748, 100.358, 61.078, -20.752, 169.024]

Ex Output:

79.091