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]: [-39, -78, -10, -56, 67, 4, 97, 31]
[EX A]: [-58.5, -44.0, -33.0, 5.5, 35.5, 50.5, 64.0]

[EX Q]: [42, 42, 0, -99, -11, 17, -42, -72]
[EX A]: [42.0, 21.0, -49.5, -55.0, 3.0, -12.5, -57.0]

[EX Q]: [-100, -64, -18, 88, -45, -24, 41, -6, -41]
[EX A]:
[-82.0, -41.0, 35.0, 21.5, -34.5, 8.5, 17.5, -23.5]