Given the task definition and input, reply with output. 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.

[165.026, -21.443, 83.393, -53.913, -85.678, 70.331, 93.359, 164.983, 150.174]

62.915