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.

[30.448, 132.545, 166.304, 202.59]
132.972

[232.39, 28.124, 179.446, 228.788, 90.985, 60.823, 92.908]
130.495

[152.187, -41.56, 33.202]

47.943