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: [22.093, -87.244, 132.342, -46.156, 125.128, 202.453]
A: 
58.103