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: [212.456, 6.972, -59.399, -83.342, 215.038, -97.851]

SOLUTION: 32.312

PROBLEM: [206.606, -76.103, -16.863, 44.126, 4.019, 15.088]

SOLUTION: 29.479

PROBLEM: [-77.484, 33.631, -59.334, -10.915, 19.02, 19.536]

SOLUTION:
-12.591