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.

[148.261, -51.308, -98.748, -41.832, 44.313, -41.042, -19.943]
-8.614

[54.908, 25.798]
40.353

[20.713, -72.414, 57.131, -44.571, 129.399, 114.795, 15.526, 50.361]

33.868