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: [34.718, 46.286, 107.22, 181.771, -27.702, -66.747]

SOLUTION: 45.924

PROBLEM: [128.916, 203.766]

SOLUTION: 166.341

PROBLEM: [-3.572, 211.092]

SOLUTION:
103.76