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: [223.951, 2.518, 140.336, -38.799, 217.497, 212.153, 21.874]

SOLUTION: 111.361

PROBLEM: [-2.772, 225.483, 211.749, 45.779, -82.623, 229.799, 107.783, 64.653]

SOLUTION: 99.981

PROBLEM: [200.207, 58.57]

SOLUTION:
129.388