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]: [230.375, -45.327, 112.137, 109.305]
[EX A]: 101.622

[EX Q]: [117.913, 21.456, 98.401, -32.801, -20.798, 182.745, 201.277]
[EX A]: 81.17

[EX Q]: [25.333, -1.498, -55.447, 126.658, -59.362, 49.057, -31.655]
[EX A]:
7.584