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].

[-7, 40, 98, 92, -81, 78, -22, 21]
[16.5, 69.0, 95.0, 5.5, -1.5, 28.0, -0.5]

[-25, 38, 7, 52, -63, -81, -63, -74, 85, 27, 2]
[6.5, 22.5, 29.5, -5.5, -72.0, -72.0, -68.5, 5.5, 56.0, 14.5]

[-77, -23, -23, -16, 96, -98, 84, 76, -15, -46, -7]

[-50.0, -23.0, -19.5, 40.0, -1.0, -7.0, 80.0, 30.5, -30.5, -26.5]