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:
[-89.318, 247.959, 25.441, -92.763, 172.246, -57.286, 181.58]

Ex Output:
55.408


Ex Input:
[-24.069, 49.942, -56.199, 147.337, 81.429, 198.62, -91.886, 33.842, -16.712, -51.661]

Ex Output:
27.064


Ex Input:
[-42.926, 63.621]

Ex Output:

10.348