Detailed Instructions: 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.
Q: [98.214, 215.946, 204.105, 125.849, 229.238, -20.862, 92.086]
A:
134.939