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]: [58.371, 4.131]
[EX A]: 31.251

[EX Q]: [95.472, 109.291, 245.955, 86.122, -90.639, 144.544, 31.063, 89.001, 40.671]
[EX A]: 83.498

[EX Q]: [63.97, 55.81, -82.725, 21.698, -31.542, 20.015, 12.167]
[EX A]:
8.485