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: [-63, 4, 4, 49, -83, 99, 85, -18, 11, 83, 73]

Answer: [-29.5, 4.0, 26.5, -17.0, 8.0, 92.0, 33.5, -3.5, 47.0, 78.0]


Question: [74, -26, 94, -68]

Answer: [24.0, 34.0, 13.0]


Question: [-91, 21, -84, 8, -20, -86, -35, -69, -34, 90, -11, -80]

Answer:
[-35.0, -31.5, -38.0, -6.0, -53.0, -60.5, -52.0, -51.5, 28.0, 39.5, -45.5]