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]: [-82.27, 46.742, -60.547, 97.652, 121.66, 104.393, -43.603, 125.281, 42.318, 200.514]
[EX A]: 55.214

[EX Q]: [103.885, 191.867, 82.228, 177.708, 136.093, -17.022]
[EX A]: 112.46

[EX Q]: [132.674, -31.96, 241.18, 242.626, 214.009, 240.556, 7.221]
[EX A]:
149.472