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:
[-86.423, 157.154, 69.563, -67.516, 147.66, 216.018, 213.404]

Ex Output:
92.837


Ex Input:
[165.647, 110.893, -83.152, -56.699, 19.53, 48.825, -64.043, 199.192, 249.46, 244.789]

Ex Output:
83.444


Ex Input:
[151.463, 163.651, -88.224, 87.7, 218.205, 88.816, 197.676, -18.096, -21.814, 241.262]

Ex Output:

102.064