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.

[130.57, 157.221, 228.177, 32.361, 166.457]
142.957

[234.272, 196.413, -92.425]
112.753

[181.325, 222.883, -24.652, 14.641]

98.549