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: [-42, 68, -97, 81, 6, 30, 71, 61, -73]

Answer: [13.0, -14.5, -8.0, 43.5, 18.0, 50.5, 66.0, -6.0]


Question: [-53, -56, -45, -28, -18, 57, -43, 80, 49, -74, 25]

Answer: [-54.5, -50.5, -36.5, -23.0, 19.5, 7.0, 18.5, 64.5, -12.5, -24.5]


Question: [5, 16, -27]

Answer:
[10.5, -5.5]


