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: [26.145, -44.254, 127.581, 162.122, 82.003, 143.809, 96.47, 34.362, 71.469]

SOLUTION: 77.745

PROBLEM: [135.575, 134.352, 209.54, 199.614, 87.027, 215.933, 49.266, 167.288, 164.589]

SOLUTION: 151.465

PROBLEM: [154.31, 61.66, 197.0, 146.568, 87.356]

SOLUTION:
129.379

