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]: [-4.969, 232.548, 81.586, 13.448, -85.528, -1.661, -76.971]
[EX A]: 22.636

[EX Q]: [-2.869, -88.698, 21.318]
[EX A]: -23.416

[EX Q]: [38.093, 245.768, -60.478, -45.559, 65.303, 83.228, 51.989]
[EX A]:
54.049