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, 76, 21, 100, 19]

Answer: [-0.5, 48.5, 60.5, 59.5]


Question: [-20, 65, 24, -49, 2, -21, 86, 4, 30, 67, -98]

Answer: [22.5, 44.5, -12.5, -23.5, -9.5, 32.5, 45.0, 17.0, 48.5, -15.5]


Question: [69, -22, -13, 76, 58, -29, 44, 1, 38, -27, -3, 53, 7]

Answer:
[23.5, -17.5, 31.5, 67.0, 14.5, 7.5, 22.5, 19.5, 5.5, -15.0, 25.0, 30.0]