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.

[73.331, 85.459, 59.798, -35.019]
45.892

[-3.281, 84.204, -74.415, 151.616, 14.048, -98.313, 95.625, -79.981]
11.188

[246.737, 248.17, -58.021, 103.791, 157.836, -37.1, 243.277, 62.463]

120.894