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.

[EX Q]: [70.485, 231.704, -98.046, -30.011, 80.665, 168.282, 224.41]
[EX A]: 92.498

[EX Q]: [9.828, 248.054, 20.871, 99.749, 52.797, -86.856, 65.438, 53.627]
[EX A]: 57.939

[EX Q]: [-65.295, 113.842, -82.683, 235.996, 143.686, 31.127, 135.386, 217.657, -87.331]
[EX A]:
71.376