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:
[1, 50, -16, -45, 72]

Ex Output:
[25.5, 17.0, -30.5, 13.5]


Ex Input:
[34, 32, -21, -70, 38, 7, -25]

Ex Output:
[33.0, 5.5, -45.5, -16.0, 22.5, -9.0]


Ex Input:
[29, 56, -48, 85, 75, -61, 59, -27, -2, 15, 20, 61, 48, -80]

Ex Output:

[42.5, 4.0, 18.5, 80.0, 7.0, -1.0, 16.0, -14.5, 6.5, 17.5, 40.5, 54.5, -16.0]