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: [-13.67, 239.672]

SOLUTION: 113.001

PROBLEM: [249.013, -43.447, 148.312, -34.41, 222.203]

SOLUTION:
108.334