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: [128.152, 95.16, 70.113, -16.853]

SOLUTION: 69.143

PROBLEM: [-68.429, 130.101, 45.673]

SOLUTION: 35.782

PROBLEM: [190.628, 198.987, 188.785, -33.776, -84.606]

SOLUTION:
92.004