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:
[10, 69, 6, -80, -39, 74]
answer:
[39.5, 37.5, -37.0, -59.5, 17.5]


question:
[77, 66, 11]
answer:
[71.5, 38.5]


question:
[26, -70, 39, -10, 89, -59, 78, -27]
answer:

[-22.0, -15.5, 14.5, 39.5, 15.0, 9.5, 25.5]