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]: [-56, 30, -70]
[EX A]: [-13.0, -20.0]

[EX Q]: [78, -73, -41, -39, 9, 71, 53, 81, -72, -45, 66, 52, 89, -80, 90]
[EX A]: [2.5, -57.0, -40.0, -15.0, 40.0, 62.0, 67.0, 4.5, -58.5, 10.5, 59.0, 70.5, 4.5, 5.0]

[EX Q]: [49, -11, 77, -59, 65, 80, 57]
[EX A]:
[19.0, 33.0, 9.0, 3.0, 72.5, 68.5]