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: [-53, -56, -45, -28, -18, 57, -43, 80, 49, -74, 25]

Answer: [-54.5, -50.5, -36.5, -23.0, 19.5, 7.0, 18.5, 64.5, -12.5, -24.5]


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: [67, 69, 74, 53, -75]

Answer:
[68.0, 71.5, 63.5, -11.0]