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.

[184.51, 79.649, 31.606, -65.279, 1.231]
46.343

[108.26, -20.681, 127.479, -29.352]
46.426

[239.875, 100.494, 190.427, 157.069, 63.337]

150.24