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]: [220.903, 155.959]
[EX A]: 188.431

[EX Q]: [118.783, 191.64, 225.792, 160.903, 209.763, 39.225, 24.607]
[EX A]: 138.673

[EX Q]: [243.009, 114.471]
[EX A]:
178.74