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]: [172.084, 126.948, 90.757]
[EX A]: 129.93

[EX Q]: [57.506, 172.357, 191.473, 131.849]
[EX A]: 138.296

[EX Q]: [38.041, -36.905, 187.562, 5.985, -59.551]
[EX A]:
27.026