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: [88.77, 109.102, -86.446, 207.301, 160.91, -12.956]

SOLUTION: 77.78

PROBLEM: [245.466, 19.262, 199.878]

SOLUTION: 154.869

PROBLEM: [-87.384, 56.271, 1.857, -62.771, 27.371, 206.537, 63.119, -12.386]

SOLUTION:
24.077