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.

Let me give you an example: [1,3,5]
The answer to this example can be: 3.000
Here is why: The mean of the input list is (1+3+5)/3, which equals 3. This is a good example.

OK. solve this:
[235.686, 14.052, -62.648, 36.22, 243.499, -19.682, 169.25, 141.358, 29.299]
Answer:
87.448