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]: [196.683, 97.538, 247.799, 203.036, 203.369, -15.737]
[EX A]: 155.448

[EX Q]: [220.903, 155.959]
[EX A]: 188.431

[EX Q]: [43.362, 111.151, 162.709, 43.974, 184.165, 238.15, 181.927]
[EX A]:
137.92