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].

[30, -51, 47]
[-10.5, -2.0]

[-100, 41, -68, -31, -71, -40, 77]
[-29.5, -13.5, -49.5, -51.0, -55.5, 18.5]

[41, -86, -16, -65, -59, -27, -84, 28, -66, 69, -100, -27, 15, 85, 69]

[-22.5, -51.0, -40.5, -62.0, -43.0, -55.5, -28.0, -19.0, 1.5, -15.5, -63.5, -6.0, 50.0, 77.0]