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: [95.725, 112.04, 231.963]

SOLUTION: 146.576

PROBLEM: [209.13, -12.632, 247.489, 55.492, 8.967, -90.158, 193.743]

SOLUTION: 87.433

PROBLEM: [181.615, 237.938, 100.237, 229.449, 219.442, 157.359, 78.05, -50.553, 246.052]

SOLUTION:
155.51