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:
[86, -66, -60]
answer:
[10.0, -63.0]


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


question:
[-22, -40, -80, -84, 51, -87, 82, -2, -77, 73, 7, 58, -65]
answer:

[-31.0, -60.0, -82.0, -16.5, -18.0, -2.5, 40.0, -39.5, -2.0, 40.0, 32.5, -3.5]