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: [21, 0, 32, 60, 36, -98, -33, 36, 23]

Answer: [10.5, 16.0, 46.0, 48.0, -31.0, -65.5, 1.5, 29.5]


Question: [-13, 58, 24, 49, 97]

Answer: [22.5, 41.0, 36.5, 73.0]


Question: [15, -100]

Answer:
[-42.5]