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.
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Question: [102.524, 88.129, 196.972]

Answer: 129.208


Question: [199.728, -96.25, -77.714]

Answer: 8.588


Question: [66.037, 30.958, 124.853]

Answer:
73.949