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.

[-98.163, -66.763, 149.544, -89.893, -10.155]
-23.086

[-77.226, 44.49]
-16.368

[80.783, 82.917, 191.828, 34.918]

97.612