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: [64.335, 28.487, -30.111, 27.504, -89.491, 90.659, -87.202]
A:
0.597