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]: [21.953, -90.519, 92.624, 189.808, 130.57, -33.423, -16.126, 31.61, 119.582]
[EX A]: 49.564

[EX Q]: [229.28, 202.632, 129.717, 211.459, 203.204]
[EX A]: 195.258

[EX Q]: [209.96, 181.177, 132.621, 106.427, 37.974, -36.658, -39.989]
[EX A]:
84.502