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].

Ex Input:
[7, -21, -30, -4, -56, 19, 24, -47, 92]

Ex Output:
[-7.0, -25.5, -17.0, -30.0, -18.5, 21.5, -11.5, 22.5]


Ex Input:
[55, -46, 64, -40]

Ex Output:
[4.5, 9.0, 12.0]


Ex Input:
[-75, 32, 62, -51, 59, 14, -17, 51, 13, 3]

Ex Output:

[-21.5, 47.0, 5.5, 4.0, 36.5, -1.5, 17.0, 32.0, 8.0]