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: [-36, 17, -25, -21, 45, 34, -39, 21, 71]

Answer: [-9.5, -4.0, -23.0, 12.0, 39.5, -2.5, -9.0, 46.0]


Question: [12, -25, -52]

Answer: [-6.5, -38.5]


Question: [0, -85, 1, 64, 53, -80, 18, 45, 57, -84, -11, 80, -23, 91]

Answer:
[-42.5, -42.0, 32.5, 58.5, -13.5, -31.0, 31.5, 51.0, -13.5, -47.5, 34.5, 28.5, 34.0]