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]: [72, -80]
[A]: [-4.0]


[Q]: [87, 23, 34, -75, -45, -33, 14, -19, 78, 38, 37, 37]
[A]:
[55.0, 28.5, -20.5, -60.0, -39.0, -9.5, -2.5, 29.5, 58.0, 37.5, 37.0]