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.

[97.816, -78.424]
9.696

[-51.496, 56.177, 55.554, -17.425, -6.185, 3.721]
6.724

[188.342, -99.815]

44.264