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: [198.958, 97.355]

SOLUTION: 148.156

PROBLEM: [160.713, 125.985, 186.982, -94.178, 183.77]

SOLUTION: 112.654

PROBLEM: [110.775, 30.627, -73.737, -73.723, -20.133, 154.05]

SOLUTION:
21.31