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]: [-51.603, 117.351, -67.451, 218.664, 68.981, 167.005, -53.851, 104.996]
[EX A]: 63.012

[EX Q]: [-17.604, 15.108, 34.328, -94.608]
[EX A]: -15.694

[EX Q]: [89.583, 153.453, 20.381, -17.436, -31.071, 91.041, 198.063]
[EX A]:
72.002