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: [-29.727, 150.587, -28.344, 181.096, 0.275, -91.658, 169.609, -21.106, 153.48]

SOLUTION: 53.801

PROBLEM: [183.332, -51.581, -15.684, 140.965, 37.376, 37.734, 71.356]

SOLUTION: 57.643

PROBLEM: [-15.345, -96.039, 150.077, 22.109, 137.321, 162.873]

SOLUTION:
60.166