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]: [53.391, 118.782, 102.742]
[EX A]: 91.638

[EX Q]: [-17.026, 165.89]
[EX A]: 74.432

[EX Q]: [124.476, -44.663, -76.334]
[EX A]:
1.16

