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.

[87.234, -30.861, 221.46, 120.15, -85.065, 67.024, 144.174, -64.546]
57.446

[179.836, 115.658, -58.613, 29.591, 198.709]
93.036

[224.557, 29.245, 110.233, 34.667, 210.584, 162.813, -56.813, 111.751]

103.38

