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.

[165.647, 110.893, -83.152, -56.699, 19.53, 48.825, -64.043, 199.192, 249.46, 244.789]
83.444

[128.152, 95.16, 70.113, -16.853]
69.143

[-40.416, -24.51, 13.291, 245.866, 102.777, 136.082, 89.702, 246.627, 206.586]

108.445