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: [30.448, 132.545, 166.304, 202.59]

SOLUTION: 132.972

PROBLEM: [217.978, 70.977, 31.129, -87.408, -99.013, 249.862, -87.151, 207.527, 43.432]

SOLUTION: 60.815

PROBLEM: [190.227, 238.717, 36.923, -8.297, 162.975, 42.425, -39.263, 48.462, -20.609]

SOLUTION:
72.396