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: [217.276, 69.181, 56.534, 10.472, 148.018, 38.673, -94.676, 241.577, -23.436, 45.907]

SOLUTION: 70.953

PROBLEM: [-13.67, 239.672]

SOLUTION: 113.001

PROBLEM: [231.56, 85.74, -6.379, 177.179, -40.191, 150.634, -3.38, 6.346]

SOLUTION:
75.189