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: [-12, -11, -13, 37, 73, -7, -15, 62, 1, 5, 93, -30, 21, 29, 99]

Answer: [-11.5, -12.0, 12.0, 55.0, 33.0, -11.0, 23.5, 31.5, 3.0, 49.0, 31.5, -4.5, 25.0, 64.0]


Question: [79, 42, -75, -7]

Answer: [60.5, -16.5, -41.0]


Question: [20, -23, 86, -57, 24, -98, 51, 35, 79, -46, -50, 13]

Answer:
[-1.5, 31.5, 14.5, -16.5, -37.0, -23.5, 43.0, 57.0, 16.5, -48.0, -18.5]