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: [-97, -65, -55, 15]

Answer: [-81.0, -60.0, -20.0]


Question: [-18, -74, -7, 59, -76, -57, -99, 65]

Answer: [-46.0, -40.5, 26.0, -8.5, -66.5, -78.0, -17.0]


Question: [54, 9, 88, 8, -67, -57, 60, 19, 95, -78, 45, 17, -21, -56, 28]

Answer:
[31.5, 48.5, 48.0, -29.5, -62.0, 1.5, 39.5, 57.0, 8.5, -16.5, 31.0, -2.0, -38.5, -14.0]