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: [88.77, 109.102, -86.446, 207.301, 160.91, -12.956]

SOLUTION: 77.78

PROBLEM: [248.385, -40.468, -97.132]

SOLUTION: 36.928

PROBLEM: [215.138, -23.809]

SOLUTION:
95.664