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.

[9.828, 248.054, 20.871, 99.749, 52.797, -86.856, 65.438, 53.627]
57.939

[15.293, 221.056, 241.387, 81.3, 102.644, 146.885, -33.65, -36.56, -69.176]
74.353

[-47.821, 22.665, -99.968, 35.694, 57.319]

-6.422