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.

[125.332, 80.443]
102.887

[135.807, 205.755, 191.805]
177.789

[150.041, 41.15, -10.082, 173.527]

88.659