instruction:
In this task you are given a list of numbers and you need to find the average of each two consecutive values. The average of two numbers a and b is calculated as: (a + b) /2. The output should be a list of the averages of each two consecutive values. A list is presented with two brackets and comma-separated values, like: [1,2,3].
question:
[-39, 16, -88, -73, 52, -75, -23, -37, 21]
answer:
[-11.5, -36.0, -80.5, -10.5, -11.5, -49.0, -30.0, -8.0]


question:
[67, -95, -71, 52, -49, 89, 64, -64, -43, -95]
answer:
[-14.0, -83.0, -9.5, 1.5, 20.0, 76.5, 0.0, -53.5, -69.0]


question:
[39, -41, 40, -45, 90, 31, 69, 96, 5]
answer:

[-1.0, -0.5, -2.5, 22.5, 60.5, 50.0, 82.5, 50.5]