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.

[-89.59, -15.783, 35.306, 46.851, 97.275, 19.027, 200.372, 62.551]
44.501

[70.553, 193.054, 166.173, 115.812]
136.398

[206.816, 74.717, -98.107, 29.157, -70.226, 52.995, -3.081]

27.467