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:
[-74, -74, 64, -88, 59, 99, 27, -18, -49]
answer:
[-74.0, -5.0, -12.0, -14.5, 79.0, 63.0, 4.5, -33.5]


question:
[-99, 61, 95]
answer:
[-19.0, 78.0]


question:
[69, -77, 70, 18, 31, -41, -52, 82, 92, -65, -12, 3, 93, 2, 78]
answer:

[-4.0, -3.5, 44.0, 24.5, -5.0, -46.5, 15.0, 87.0, 13.5, -38.5, -4.5, 48.0, 47.5, 40.0]