You will be given a definition of a task first, then some input of the task.
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.

[83.591, 73.404, 81.734, -90.174, -5.429, 172.074, -47.713, 211.829, 232.468, 188.917]
Output:
90.07