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]: [246.282, 231.815, 1.709, -51.234, -76.432, 21.802, 18.917, 106.734, 168.909, -67.647]
[EX A]: 60.085

[EX Q]: [227.874, 175.626, 193.094, 63.963, 139.938]
[EX A]: 160.099

[EX Q]: [-56.965, 152.236, -42.308, 198.276, 104.282, 90.876, -51.888, 161.115, 193.887]
[EX A]:
83.279