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: [161.683, 162.041, 187.429, -79.681, 60.809, 225.806]

A: 119.681
****
Q: [78.523, 239.098, 9.698, 69.94]

A: 99.315
****
Q: [-71.31, 39.577, 13.088, -64.447, -23.339]

A:
-21.286
****