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.

[10.724, -65.993, 107.56, 154.38, 117.135, 114.495, 11.544]
64.264

[64.523, 131.207, -30.223, -95.659]
17.462

[-48.097, 181.077, 221.067, -10.376, -74.406, 107.838]

62.851