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]: [116.074, 213.452, 86.981]
[EX A]: 138.836

[EX Q]: [-66.735, 23.822, -34.5, 118.327, 242.333]
[EX A]: 56.649

[EX Q]: [14.991, -71.897, 59.429, -23.24, 231.819, -61.55, -34.507, -47.27, 95.473]
[EX A]:
18.139