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: [31, -62, 49, -13, -30, -59, 76, 31, 40, -31, -56, -36]

Answer: [-15.5, -6.5, 18.0, -21.5, -44.5, 8.5, 53.5, 35.5, 4.5, -43.5, -46.0]


Question: [-56, 30, -70]

Answer: [-13.0, -20.0]


Question: [55, 9, -52, -87, 28, -90, -71, 35, -27]

Answer:
[32.0, -21.5, -69.5, -29.5, -31.0, -80.5, -18.0, 4.0]