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:
[72, -90, -99, -88, -87, -26, -40, -45, 69, 32, 57, 21, -67]
answer:
[-9.0, -94.5, -93.5, -87.5, -56.5, -33.0, -42.5, 12.0, 50.5, 44.5, 39.0, -23.0]


question:
[17, -31, 89, -43, 58, -50, 2, -61]
answer:
[-7.0, 29.0, 23.0, 7.5, 4.0, -24.0, -29.5]


question:
[46, 74, -93, 93, -15, 62]
answer:

[60.0, -9.5, 0.0, 39.0, 23.5]