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

Answer: 50.629


Question: [197.424, 44.178, 136.316, 246.48, 98.472, -31.327, 41.411]

Answer: 104.708


Question: [129.919, 200.349, 156.629]

Answer:
162.299