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]: [181.256, -78.191, 162.427, -90.527, 123.709, 248.073]
[EX A]: 91.124

[EX Q]: [-81.785, -44.121]
[EX A]: -62.953

[EX Q]: [-65.796, 225.256, -90.863, -31.223, -16.891, 225.033, 249.122, 140.638, 30.242]
[EX A]:
73.946