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: [-69.698, 181.415, -43.045, 160.857]

Answer: 57.382


Question: [-2.425, -41.007, 142.975, 117.593, 142.875, -69.307, -38.932, 92.631, 158.921, 87.117]

Answer: 59.044


Question: [-3.914, 130.866, 20.311, 206.531, 173.235, -43.858, -78.715, 117.81, 73.103]

Answer:
66.152