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: [-21, 12, 53, 49, 2, -54, -28, 8, -77, 27, -33]

Answer: [-4.5, 32.5, 51.0, 25.5, -26.0, -41.0, -10.0, -34.5, -25.0, -3.0]


Question: [58, -99]

Answer: [-20.5]


Question: [62, 92, 94]

Answer:
[77.0, 93.0]