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]: [-18, -74, -7, 59, -76, -57, -99, 65]
[A]: [-46.0, -40.5, 26.0, -8.5, -66.5, -78.0, -17.0]


[Q]: [64, -5, -29]
[A]: [29.5, -17.0]


[Q]: [21, -50]
[A]:
[-14.5]