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: [229.28, 202.632, 129.717, 211.459, 203.204]

SOLUTION: 195.258

PROBLEM: [-19.769, 147.929, -36.133, 201.287, 28.528, -6.089, 122.533, 127.892, -36.662]

SOLUTION: 58.835

PROBLEM: [-38.077, -93.848, 8.152]

SOLUTION:
-41.258