instruction:
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.
question:
[57.506, 172.357, 191.473, 131.849]
answer:
138.296


question:
[199.874, -45.634, -39.343, 75.985, 143.35, 87.15, 120.645, -34.636, 159.567]
answer:
74.106


question:
[207.297, 65.272, -4.548, 159.113, 193.955, 111.483, 19.355, -17.757, -16.517]
answer:

79.739