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.
--------
Question: [-9.301, -10.629, 88.777, 68.965]

Answer: 34.453


Question: [171.805, 71.031, 36.192, 28.948, -58.045, 53.843]

Answer: 50.629


Question: [208.678, 219.921, 113.318, 23.83, -42.88, -32.702, -36.191, 117.84, 91.988]

Answer:
73.756