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].

[-64, -46, 21, -97, -86]
[-55.0, -12.5, -38.0, -91.5]

[-16, -7, -2, 3, 84, -53, 9, 30, -67, 44, -42, 99]
[-11.5, -4.5, 0.5, 43.5, 15.5, -22.0, 19.5, -18.5, -11.5, 1.0, 28.5]

[70, 22, 42, -61, -38, 33, -70]

[46.0, 32.0, -9.5, -49.5, -2.5, -18.5]