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].
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Question: [20, 17, 12, -4, 33, -71, 17, -43, 72, -53, 80]

Answer: [18.5, 14.5, 4.0, 14.5, -19.0, -27.0, -13.0, 14.5, 9.5, 13.5]


Question: [41, 85, 88, 99, -25, -32, -62, -9, -46, -89]

Answer: [63.0, 86.5, 93.5, 37.0, -28.5, -47.0, -35.5, -27.5, -67.5]


Question: [43, -22, -75, -92, -34, 33, -60, -65, 89]

Answer:
[10.5, -48.5, -83.5, -63.0, -0.5, -13.5, -62.5, 12.0]