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]: [169.922, 249.47, 142.453, -55.768, 155.357, 6.096, -95.702, 243.569, 31.11, -75.031]
[EX A]: 77.148

[EX Q]: [-34.026, 86.773, 149.194, 228.14]
[EX A]: 107.52

[EX Q]: [-88.262, -7.13, 233.712, -35.159, 235.658, 222.687, 24.571]
[EX A]:
83.725