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: [199.874, -45.634, -39.343, 75.985, 143.35, 87.15, 120.645, -34.636, 159.567]

SOLUTION: 74.106

PROBLEM: [117.913, 21.456, 98.401, -32.801, -20.798, 182.745, 201.277]

SOLUTION: 81.17

PROBLEM: [-58.206, 126.674, 71.656]

SOLUTION:
46.708