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.

[49.035, -81.115, 27.419]
-1.554

[237.501, 67.08, 13.857]
106.146

[184.51, 79.649, 31.606, -65.279, 1.231]

46.343