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:
[-25, 29, 0, -66, -92, 11, -89, -35, 80, -69, 81, -69]

Ex Output:
[2.0, 14.5, -33.0, -79.0, -40.5, -39.0, -62.0, 22.5, 5.5, 6.0, 6.0]


Ex Input:
[-45, -84, 35, 40]

Ex Output:
[-64.5, -24.5, 37.5]


Ex Input:
[-53, -56, -45, -28, -18, 57, -43, 80, 49, -74, 25]

Ex Output:

[-54.5, -50.5, -36.5, -23.0, 19.5, 7.0, 18.5, 64.5, -12.5, -24.5]