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].

[-20, 65, 24, -49, 2, -21, 86, 4, 30, 67, -98]
[22.5, 44.5, -12.5, -23.5, -9.5, 32.5, 45.0, 17.0, 48.5, -15.5]

[24, 99, 39, -86]
[61.5, 69.0, -23.5]

[-49, -19, 2, -35, -41, -57, -97]

[-34.0, -8.5, -16.5, -38.0, -49.0, -77.0]