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

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


Question: [74, -26, 94, -68]

Answer: [24.0, 34.0, 13.0]


Question: [1, -81, -72, -37, -76, 98, 51, 90, 39, 18]

Answer:
[-40.0, -76.5, -54.5, -56.5, 11.0, 74.5, 70.5, 64.5, 28.5]