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: [102.524, 88.129, 196.972]

SOLUTION: 129.208

PROBLEM: [112.026, 20.03, 73.595, -24.957, 185.718, 36.43, 206.024]

SOLUTION: 86.981

PROBLEM: [136.328, 90.98, 111.452]

SOLUTION:
112.92