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.

[135.575, 134.352, 209.54, 199.614, 87.027, 215.933, 49.266, 167.288, 164.589]
151.465

[-61.563, 49.659, 125.562, 130.542, 75.232, 197.442, 175.182, 54.736, 210.833, 65.27]
102.289

[61.199, 17.031, 113.586, 133.07, -94.395, -31.92, 212.336, 168.803, 108.464, -10.231]

67.794

