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: [-89, 83, 0, -53]

Answer: [-3.0, 41.5, -26.5]


Question: [-61, -4, 59, 97, 77, 15, 50, -66, 99, 90, -77, 53]

Answer: [-32.5, 27.5, 78.0, 87.0, 46.0, 32.5, -8.0, 16.5, 94.5, 6.5, -12.0]


Question: [71, 13, -18, -27, -86, -20, 12, 1]

Answer:
[42.0, -2.5, -22.5, -56.5, -53.0, -4.0, 6.5]