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]: [72.326, -74.6, 127.566, -54.848, 198.529, -44.061, -28.155]
[EX A]: 28.108

[EX Q]: [-60.041, -56.779, 6.2, 73.114, 137.319]
[EX A]: 19.963

[EX Q]: [-73.587, -24.893, -19.975, 173.446, 84.139, 5.045]
[EX A]:
24.029