TASK DEFINITION: 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.
PROBLEM: [9.828, 248.054, 20.871, 99.749, 52.797, -86.856, 65.438, 53.627]

SOLUTION: 57.939

PROBLEM: [159.243, 17.964, 13.543, 175.402, -52.441, -34.741, 158.461]

SOLUTION: 62.49

PROBLEM: [-20.161, -82.699, -55.493, 129.829, 14.679, 221.727, -18.924, 9.331]

SOLUTION:
24.786