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].

[74, -35, -92, -40, 97]
[19.5, -63.5, -66.0, 28.5]

[-100, -100, -39, 13, 24, -2, 77, 37, -20, -38, 18, 55]
[-100.0, -69.5, -13.0, 18.5, 11.0, 37.5, 57.0, 8.5, -29.0, -10.0, 36.5]

[46, 16, -32, 94, -96, 81, 72, -94, -96, -98, -100]

[31.0, -8.0, 31.0, -1.0, -7.5, 76.5, -11.0, -95.0, -97.0, -99.0]