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]: [57.478, 212.225, -90.816, -10.092, 238.514, 60.36, 59.627]
[EX A]: 75.328

[EX Q]: [192.529, -67.249, 123.707, 41.987, 11.587, 202.189, 12.989]
[EX A]: 73.963

[EX Q]: [152.996, 172.675, -3.984, 177.508, 216.001, 233.337, -12.262, -8.807, -27.538]
[EX A]:
99.992