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]: [22.306, 72.768, 218.947, 52.973, 100.121, 157.59, -92.109]
[EX A]: 76.085

[EX Q]: [231.057, 71.527, 201.799, -5.17, -14.963, -35.693]
[EX A]: 74.76

[EX Q]: [131.353, 22.86, 232.059, 172.535]
[EX A]:
139.702