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]: [234.404, 162.933, 178.375, 10.683, 181.727, -50.587, 169.507, -72.896, 168.06, 238.363]
[EX A]: 122.057

[EX Q]: [139.238, 225.164, -21.563, -22.339, -77.136, 96.772, -40.208, 121.974, 228.852]
[EX A]: 72.306

[EX Q]: [127.522, 232.86, 46.593]
[EX A]:
135.658