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:
[-21, 92, -76, 59, 41, -99, -5, 35, 92, 66, -50]
answer:
[35.5, 8.0, -8.5, 50.0, -29.0, -52.0, 15.0, 63.5, 79.0, 8.0]


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


question:
[-86, 5, 2, -94, 93, 30, -89, -58, 67, -69, 68, 96]
answer:

[-40.5, 3.5, -46.0, -0.5, 61.5, -29.5, -73.5, 4.5, -1.0, -0.5, 82.0]