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: [24, 99, 39, -86]

Answer: [61.5, 69.0, -23.5]


Question: [70, 88, 58, -25, 49, -89, 76, -46, 59, 48, -40, -62]

Answer: [79.0, 73.0, 16.5, 12.0, -20.0, -6.5, 15.0, 6.5, 53.5, 4.0, -51.0]


Question: [91, 97, -31, -77, 49, -81, 51, 66]

Answer:
[94.0, 33.0, -54.0, -14.0, -16.0, -15.0, 58.5]