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.

[73.603, -84.154, 222.739, 205.594, 215.842]
126.725

[126.453, 169.516, 109.837, 208.695, 113.906, 56.894, 171.345, 126.81]
135.432

[227.657, -51.382, 22.309, 130.1, 238.49, 74.387, -64.526, 207.509]

98.068