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]: [14.587, 49.21, -21.274, -54.714, 243.935, 218.436]
[EX A]: 75.03

[EX Q]: [227.601, -61.961, 78.822, -29.52, 126.039, -44.098, 112.374, -19.23, 69.758]
[EX A]: 51.087

[EX Q]: [65.972, -62.482, -37.595, -68.513, 95.316, 53.128, -91.321]
[EX A]:
-6.499