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]: [122.737, 189.477, -4.853, 150.031, 126.296, 240.809, 204.743, 29.178]
[EX A]: 132.302

[EX Q]: [54.908, 25.798]
[EX A]: 40.353

[EX Q]: [145.64, 167.175, -4.157, 242.474, 174.818]
[EX A]:
145.19