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]: [1, -85]
[EX A]: [-42.0]

[EX Q]: [-51, 1, -77, -80, 33, -42, 41, 86, -18, 58]
[EX A]: [-25.0, -38.0, -78.5, -23.5, -4.5, -0.5, 63.5, 34.0, 20.0]

[EX Q]: [-67, -71, 69]
[EX A]:
[-69.0, -1.0]