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: [-71, 91, 51, -78, -87, -87, 71]

Answer: [10.0, 71.0, -13.5, -82.5, -87.0, -8.0]


Question: [29, -54, 81, -85, 51, -12, -11, -68, 38, 83, 46]

Answer: [-12.5, 13.5, -2.0, -17.0, 19.5, -11.5, -39.5, -15.0, 60.5, 64.5]


Question: [24, 99, 39, -86]

Answer:
[61.5, 69.0, -23.5]