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:
[223.847, 115.483, 148.407, -44.824, 99.251, 36.833, -45.949]

Ex Output:
76.15


Ex Input:
[-77.226, 44.49]

Ex Output:
-16.368


Ex Input:
[-91.111, 124.066, 70.268, -6.558, -5.658, -81.924, 238.639, 248.189]

Ex Output:

61.989