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, -15, -76]
[11.5, -45.5]

[45, 48, -28, 45]
[46.5, 10.0, 8.5]

[-7, -89, -64, -42, 97, -50]

[-48.0, -76.5, -53.0, 27.5, 23.5]