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].

[-38, -61, -23, -94, -64, 18, -26, -96, -92, 96, -34, -80, -13, 45, -83]
[-49.5, -42.0, -58.5, -79.0, -23.0, -4.0, -61.0, -94.0, 2.0, 31.0, -57.0, -46.5, 16.0, -19.0]

[-2, -26, 60, 94, 36, -43, -53, 74, -93, 51, -46, 85, 23, 71]
[-14.0, 17.0, 77.0, 65.0, -3.5, -48.0, 10.5, -9.5, -21.0, 2.5, 19.5, 54.0, 47.0]

[-6, 3, 35, -38, -60, -52, -50, 93, 49, -90]

[-1.5, 19.0, -1.5, -49.0, -56.0, -51.0, 21.5, 71.0, -20.5]