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: [236.959, 159.123, 17.257, 241.561, 119.782, -3.56, -30.957]

SOLUTION: 105.738

PROBLEM: [198.475, -38.691]

SOLUTION: 79.892

PROBLEM: [119.44, -41.637, 49.67, 81.639, 146.767]

SOLUTION:
71.176