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].

[-77, -52, 64, 34, -9, 29, -91, 90, 8, -87, 34, 1, -8]
[-64.5, 6.0, 49.0, 12.5, 10.0, -31.0, -0.5, 49.0, -39.5, -26.5, 17.5, -3.5]

[-20, -20, 87, -95, 61, -9, -35]
[-20.0, 33.5, -4.0, -17.0, 26.0, -22.0]

[-51, -94, -19, -90, -51, 66, -100, -84]

[-72.5, -56.5, -54.5, -70.5, 7.5, -17.0, -92.0]