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:
[110.671, -22.006, 168.421, 152.718, 116.702, -26.669, -55.023, -72.932]

Ex Output:
46.485


Ex Input:
[98.967, 94.497, 2.134, 78.053, -78.517, 126.749, 87.549, 45.047, 51.818]

Ex Output:

56.255