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: [87.258, 29.558, -48.199, -28.615, 46.642]

SOLUTION: 17.329

PROBLEM: [93.048, 173.783, 88.736, -95.085, -77.155, -2.381, -84.313]

SOLUTION: 13.805

PROBLEM: [102.937, 190.883, 91.774, -43.955, 160.303, -29.594]

SOLUTION:
78.725