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: [-31.241, 73.981, 127.71, 166.275, 35.028, -10.432]

SOLUTION: 60.22

PROBLEM: [203.976, 106.117, 62.128, -89.428, 180.453, 155.566, 213.868]

SOLUTION: 118.954

PROBLEM: [-84.009, 61.567, 57.773, 118.79]

SOLUTION:
38.53