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: [231.352, -24.17]

Answer: 103.591


Question: [61.739, -99.854, -53.677]

Answer: -30.597


Question: [20.275, -64.206, 247.702, 156.715, 209.023]

Answer:
113.902