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:
[30.448, 132.545, 166.304, 202.59]

Ex Output:
132.972


Ex Input:
[198.475, -38.691]

Ex Output:
79.892


Ex Input:
[61.766, -42.218, 63.408]

Ex Output:

27.652