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.

[109.109, -95.395, 5.04, 45.497, 56.443, -72.916]
7.963

[-15.843, 236.17, -79.922, -29.879]
27.632

[-1.854, 229.667, 115.205, 89.778, -26.764, 220.005, -48.184, -35.545]

67.788