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].

[-12, -89]
[-50.5]

[6, -20, 92, 43, -89, 46, 1, -64, -71, 88]
[-7.0, 36.0, 67.5, -23.0, -21.5, 23.5, -31.5, -67.5, 8.5]

[-81, -11, -100, 66, 29, 28, 31, -36]

[-46.0, -55.5, -17.0, 47.5, 28.5, 29.5, -2.5]