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: [125.332, 80.443]

SOLUTION: 102.887

PROBLEM: [70.496, 183.122, 75.017, -19.287, 53.364, -12.389, 249.47, -88.484, 249.98, 35.226]

SOLUTION: 79.652

PROBLEM: [115.312, 165.47, 247.989, -43.103, 132.924, 124.421, 175.521, 7.047, -7.973, 88.174]

SOLUTION:
100.578