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: [86, -66, -60]

Answer: [10.0, -63.0]


Question: [-22, -85]

Answer: [-53.5]


Question: [89, -69, 78, 0, -42]

Answer:
[10.0, 4.5, 39.0, -21.0]