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: [10, 69, 6, -80, -39, 74]

Answer: [39.5, 37.5, -37.0, -59.5, 17.5]


Question: [-5, 81, 50, -12, 34, 99, -50, -91, -12, 2, 97, 2, -16, 79]

Answer: [38.0, 65.5, 19.0, 11.0, 66.5, 24.5, -70.5, -51.5, -5.0, 49.5, 49.5, -7.0, 31.5]


Question: [-21, -92]

Answer:
[-56.5]