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.

[-95.427, -98.447]
-96.937

[-51.127, -53.399, -58.094, 172.367, -29.286, 109.468, -34.858, -99.953, 9.617, -8.063]
-4.333

[-3.074, 229.837, 19.376, 143.117, 23.013, 133.065, -23.631]

74.529