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:
[20, 17, 12, -4, 33, -71, 17, -43, 72, -53, 80]
answer:
[18.5, 14.5, 4.0, 14.5, -19.0, -27.0, -13.0, 14.5, 9.5, 13.5]


question:
[-89, 26, -64, -96, 40, -90, -88]
answer:
[-31.5, -19.0, -80.0, -28.0, -25.0, -89.0]


question:
[-20, 82, -50, -55, 57, 85]
answer:

[31.0, 16.0, -52.5, 1.0, 71.0]