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: [-10.287, -0.47, 195.152, 209.845, -64.645, -82.959, 106.327]

SOLUTION: 50.423

PROBLEM: [234.272, 196.413, -92.425]

SOLUTION: 112.753

PROBLEM: [-83.345, 141.233, 70.261]

SOLUTION:
42.716