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, 27, 49]
[32.5, 38.0]

[43, -57]
[-7.0]

[31, -56, 26, -69, 42, 51, -45, 47, -51, 58, -81, 64, -33]

[-12.5, -15.0, -21.5, -13.5, 46.5, 3.0, 1.0, -2.0, 3.5, -11.5, -8.5, 15.5]