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: [-7, 40, 98, 92, -81, 78, -22, 21]

Answer: [16.5, 69.0, 95.0, 5.5, -1.5, 28.0, -0.5]


Question: [-64, -46, 21, -97, -86]

Answer: [-55.0, -12.5, -38.0, -91.5]


Question: [-23, 21, 72, -61, -38, 98, -13, 47, -99, -82]

Answer:
[-1.0, 46.5, 5.5, -49.5, 30.0, 42.5, 17.0, -26.0, -90.5]