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]: [138.602, 158.458, 241.327, 194.509, 169.45, -56.151]
[EX A]: 141.032

[EX Q]: [58.271, 233.766, -9.758, -40.349, 145.507, 90.294, 186.999]
[EX A]: 94.961

[EX Q]: [170.075, 38.205, 106.764]
[EX A]:
105.015