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:
[-100, -17, -69, 0, 35, -39, -34, -70, 21, 55, -74, -63]
answer:
[-58.5, -43.0, -34.5, 17.5, -2.0, -36.5, -52.0, -24.5, 38.0, -9.5, -68.5]


question:
[-59, 49]
answer:
[-5.0]


question:
[-68, -65, 90, -75, -17, -29, 82, 56]
answer:

[-66.5, 12.5, 7.5, -46.0, -23.0, 26.5, 69.0]