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: [78, -73, -41, -39, 9, 71, 53, 81, -72, -45, 66, 52, 89, -80, 90]

Answer: [2.5, -57.0, -40.0, -15.0, 40.0, 62.0, 67.0, 4.5, -58.5, 10.5, 59.0, 70.5, 4.5, 5.0]


Question: [6, 80, -33, -48, -65, 9, 53, 34, 54]

Answer: [43.0, 23.5, -40.5, -56.5, -28.0, 31.0, 43.5, 44.0]


Question: [70, -27, -68]

Answer:
[21.5, -47.5]