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.

[73.596, 210.962, 220.847, -88.376, 6.887, 57.473, 141.324]
Output:
88.959