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: [-61.905, -98.66, 90.472, 237.317, 5.243, 196.933]

SOLUTION: 61.567

PROBLEM: [10.724, -65.993, 107.56, 154.38, 117.135, 114.495, 11.544]

SOLUTION: 64.264

PROBLEM: [-15.885, 135.262, 135.999, 179.96, 178.268, -65.339, 63.708]

SOLUTION:
87.425