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].

[-81, -97, 24, 13, -42, -46, -6, 31]
[-89.0, -36.5, 18.5, -14.5, -44.0, -26.0, 12.5]

[-59, 35, 54, 98, 61, -21, 64, 91, -17, -70]
[-12.0, 44.5, 76.0, 79.5, 20.0, 21.5, 77.5, 37.0, -43.5]

[51, 34, 26, 39, -87, 71, -28, 76, -95, -8]

[42.5, 30.0, 32.5, -24.0, -8.0, 21.5, 24.0, -9.5, -51.5]