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: [156.41, 19.521, 110.08, -59.009, 49.787, 243.748, -25.285, -71.104, 131.859, -70.207]

SOLUTION: 48.58

PROBLEM: [89.583, 153.453, 20.381, -17.436, -31.071, 91.041, 198.063]

SOLUTION: 72.002

PROBLEM: [37.653, -0.882, 60.801, -86.383, -94.819, 155.082]

SOLUTION:
11.909

