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: [-1.31, 169.522, -26.172, 111.289]

SOLUTION: 63.332

PROBLEM: [179.929, 180.162, -63.896, -56.366, 233.638]

SOLUTION: 94.693

PROBLEM: [159.032, 201.228, 47.28, 67.373, 241.516]

SOLUTION:
143.286