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: [-77, -57, 89, 67, -3, 6, 76]

Answer: [-67.0, 16.0, 78.0, 32.0, 1.5, 41.0]


Question: [-18, 63, 49, 17, 1]

Answer: [22.5, 56.0, 33.0, 9.0]


Question: [-91, 60, -71]

Answer:
[-15.5, -5.5]