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]: [-98.809, 139.617, 148.76, -52.034, 161.969, 117.253, 16.668, 164.37, -75.91, -31.599]
[EX A]: 49.028

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

[EX Q]: [-5.238, -27.361, 210.235, 123.97]
[EX A]:
75.402