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: [7, -21, -30, -4, -56, 19, 24, -47, 92]

Answer: [-7.0, -25.5, -17.0, -30.0, -18.5, 21.5, -11.5, 22.5]


Question: [31, -43]

Answer: [-6.0]


Question: [83, -58]

Answer:
[12.5]