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]: [-51.496, 56.177, 55.554, -17.425, -6.185, 3.721]
[EX A]: 6.724

[EX Q]: [17.197, 152.985, 73.815]
[EX A]: 81.332

[EX Q]: [166.37, 129.717, 181.024, -64.757, 36.721, 48.388, 240.775, 59.551]
[EX A]:
99.724