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: [147.664, 167.561, 244.106, -42.988, 9.425, 79.806, 239.58]

SOLUTION: 120.736

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

SOLUTION: 74.353

PROBLEM: [81.221, -15.412, 86.0, 60.914, 93.435, -48.008, 132.116, 132.732, 64.86]

SOLUTION:
65.318