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: [-2.425, -41.007, 142.975, 117.593, 142.875, -69.307, -38.932, 92.631, 158.921, 87.117]

SOLUTION: 59.044

PROBLEM: [207.449, 85.584, -55.048, -10.53, 30.755]

SOLUTION: 51.642

PROBLEM: [54.554, 230.72, 213.903]

SOLUTION:
166.392