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: [-16, 54, 42]

Answer: [19.0, 48.0]


Question: [-55, -71, -30, -22]

Answer: [-63.0, -50.5, -26.0]


Question: [-17, -69, -71, -70, -71, 64, -28, 12]

Answer:
[-43.0, -70.0, -70.5, -70.5, -3.5, 18.0, -8.0]