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]: [-92.0, 108.814, 164.207, 94.26, 33.74]
[EX A]: 61.804

[EX Q]: [134.631, 27.106]
[EX A]: 80.868

[EX Q]: [199.358, 192.848, -22.704, 141.997]
[EX A]:
127.875