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].

[87, 34, 59, -97, -67, -71, -28, -51, 56]
[60.5, 46.5, -19.0, -82.0, -69.0, -49.5, -39.5, 2.5]

[94, 36, -77, -44, -66, -1, 63, 28, 84, 91, 4, -43, 39, -81, -73]
[65.0, -20.5, -60.5, -55.0, -33.5, 31.0, 45.5, 56.0, 87.5, 47.5, -19.5, -2.0, -21.0, -77.0]

[-63, 22, 66, -25, 21, -32, -57, -66, 50, -82, 29]

[-20.5, 44.0, 20.5, -2.0, -5.5, -44.5, -61.5, -8.0, -16.0, -26.5]