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]: [95.472, 109.291, 245.955, 86.122, -90.639, 144.544, 31.063, 89.001, 40.671]
[EX A]: 83.498

[EX Q]: [-55.198, 36.097, 190.132]
[EX A]: 57.01

[EX Q]: [-82.17, 5.039, 69.487, 134.879, 144.363, -60.559, 108.061, -94.141, -60.823, -84.012]
[EX A]:
8.012