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.

[-60.041, -56.779, 6.2, 73.114, 137.319]
19.963

[-66.676, -7.063, -18.028, 13.407, 54.369, 148.394, -93.155]
4.464

[-75.585, 100.466, 173.612, -49.914, -3.926, 123.033, -41.309, 11.466, -27.853, 192.989]

40.298