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]: [233.742, -71.075]
[EX A]: 81.333

[EX Q]: [132.047, -2.027, 97.041, -49.199, 29.646, 3.384, 104.121, 237.857, 5.555]
[EX A]: 62.047

[EX Q]: [-7.656, 27.113, -46.094, -88.382, 148.986, -55.66, 133.332, -5.579, 54.5]
[EX A]:
17.84