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:
[233.848, -58.713, 126.623, 27.615, 62.365, 200.239, 13.38]

Ex Output:
86.48

Ex Input:
[112.53, -67.079, 177.313, 230.482, 57.316, -37.564]

Ex Output:
78.833

Ex Input:
[173.213, -0.905, 201.343, 44.316, 61.99, 78.612, 178.193]

Ex Output:
105.252