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.

[225.697, 75.029]
150.363

[-48.12, 192.63, 32.454, 132.703, -26.044, 140.006, -8.624, 38.438]
56.68

[-52.444, 112.084, 178.657, -54.459, -87.991, 246.326, 148.402, 123.572, -34.311, 183.622]

76.346