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].

[-47, -92, 82, -29, -21, -46, -47, 55, -27, -9, 39, -94, 81]
[-69.5, -5.0, 26.5, -25.0, -33.5, -46.5, 4.0, 14.0, -18.0, 15.0, -27.5, -6.5]

[83, 68, 64, 59]
[75.5, 66.0, 61.5]

[81, -51, 1, -76, 11, 93, -3, 40, -15, -37, -20, -34, -85, -64, -34]

[15.0, -25.0, -37.5, -32.5, 52.0, 45.0, 18.5, 12.5, -26.0, -28.5, -27.0, -59.5, -74.5, -49.0]