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: [-90, 40, 90]

Answer: [-25.0, 65.0]


Question: [68, -66]

Answer: [1.0]


Question: [-40, -28, -97, 17, 63, 43, 71, 55, -82]

Answer:
[-34.0, -62.5, -40.0, 40.0, 53.0, 57.0, 63.0, -13.5]