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: [84.13, 59.186, 115.606]

SOLUTION: 86.307

PROBLEM: [24.119, 239.006, 239.873, 236.27, 134.34]

SOLUTION: 174.722

PROBLEM: [134.362, 95.641, 171.541, 167.562, 6.713, -22.782]

SOLUTION:
92.173