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]: [86, -66, -60]
[A]: [10.0, -63.0]


[Q]: [53, 7, 83, -99]
[A]: [30.0, 45.0, -8.0]


[Q]: [61, -78, 16, 23, -42, -9, 91, -41, -90]
[A]:
[-8.5, -31.0, 19.5, -9.5, -25.5, 41.0, 25.0, -65.5]