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:
[91, 4, -53, 2, 79, -22, -71]

Ex Output:
[47.5, -24.5, -25.5, 40.5, 28.5, -46.5]


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:
[77, -48, -79, 84, -44, -27, -74, -40, 94]

Ex Output:

[14.5, -63.5, 2.5, 20.0, -35.5, -50.5, -57.0, 27.0]