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].

[EX Q]: [-71, 91, 51, -78, -87, -87, 71]
[EX A]: [10.0, 71.0, -13.5, -82.5, -87.0, -8.0]

[EX Q]: [72, -90, -99, -88, -87, -26, -40, -45, 69, 32, 57, 21, -67]
[EX A]: [-9.0, -94.5, -93.5, -87.5, -56.5, -33.0, -42.5, 12.0, 50.5, 44.5, 39.0, -23.0]

[EX Q]: [-63, -53, -21, -91]
[EX A]:
[-58.0, -37.0, -56.0]