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: [40, -65, -77]

Answer: [-12.5, -71.0]


Question: [76, 77, 36, 41]

Answer: [76.5, 56.5, 38.5]


Question: [-17, 36, -86, -32, 28, 71]

Answer:
[9.5, -25.0, -59.0, -2.0, 49.5]