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:
[58, -15]
answer:
[21.5]


question:
[89, -29, -43, 99, -63, -80, -73, -50, -58]
answer:
[30.0, -36.0, 28.0, 18.0, -71.5, -76.5, -61.5, -54.0]


question:
[58, -36, -67, 98, -32, -52, 12, 6, -49, -10, -40, -52, 6, -9, 64]
answer:

[11.0, -51.5, 15.5, 33.0, -42.0, -20.0, 9.0, -21.5, -29.5, -25.0, -46.0, -23.0, -1.5, 27.5]