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: [122.737, 189.477, -4.853, 150.031, 126.296, 240.809, 204.743, 29.178]

SOLUTION: 132.302

PROBLEM: [108.822, 139.139, 130.938, 100.996, 155.361, 8.752, 221.639, -12.877]

SOLUTION: 106.596

PROBLEM: [-5.214, 241.638, 175.631, 201.443, 244.619]

SOLUTION:
171.623