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:
[-3, -21, 57, -70, -97, -90, 31, 83, 68, -34, -65, 13]
answer:
[-12.0, 18.0, -6.5, -83.5, -93.5, -29.5, 57.0, 75.5, 17.0, -49.5, -26.0]


question:
[66, -73, -61, -3, 2, -47, -91, 97, 58, -62, 81, -71, -43, -40, -65]
answer:
[-3.5, -67.0, -32.0, -0.5, -22.5, -69.0, 3.0, 77.5, -2.0, 9.5, 5.0, -57.0, -41.5, -52.5]


question:
[-10, -30, -57, 31, 84, 71, 83, 75, -30, -36, 3, 48, -17, 56, -50]
answer:

[-20.0, -43.5, -13.0, 57.5, 77.5, 77.0, 79.0, 22.5, -33.0, -16.5, 25.5, 15.5, 19.5, 3.0]