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]: [87.234, -30.861, 221.46, 120.15, -85.065, 67.024, 144.174, -64.546]
[EX A]: 57.446

[EX Q]: [43.623, 57.155]
[EX A]:
50.389