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]: [247.332, 97.053, 43.697, 51.168, -56.25, 163.444]
[EX A]: 91.074

[EX Q]: [231.159, 217.795, 230.676, -11.951, -82.697, 31.413]
[EX A]: 102.732

[EX Q]: [52.696, 230.416, 89.385, 227.188, -81.137, 239.638, 64.455, -84.734, -73.041]
[EX A]:
73.874