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.

[77.498, 234.955, 184.005, -48.344, 113.167]
112.256

[34.718, 46.286, 107.22, 181.771, -27.702, -66.747]
45.924

[-46.113, 125.487, 133.801, 230.957, 217.606, 147.203, -27.73, 66.455, -96.494]

83.464