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].

[Q]: [77, 66, 11]
[A]: [71.5, 38.5]


[Q]: [-60, 14, 11, 76]
[A]: [-23.0, 12.5, 43.5]


[Q]: [-73, -25, -81, 3, 49, -56, 5, -90, -83, -48, 47]
[A]:
[-49.0, -53.0, -39.0, 26.0, -3.5, -25.5, -42.5, -86.5, -65.5, -0.5]