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.

[132.047, -2.027, 97.041, -49.199, 29.646, 3.384, 104.121, 237.857, 5.555]
62.047

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

[145.592, -71.384, 226.119, -11.407, 79.985]

73.781