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:
[-96, 58, -84, -38, 62, 47, 77, -64, 97, 42, 55, 83, -69]

Ex Output:
[-19.0, -13.0, -61.0, 12.0, 54.5, 62.0, 6.5, 16.5, 69.5, 48.5, 69.0, 7.0]


Ex Input:
[40, -65, -77]

Ex Output:
[-12.5, -71.0]


Ex Input:
[13, -34, -22, 99, -53, 97, 32, -63]

Ex Output:

[-10.5, -28.0, 38.5, 23.0, 22.0, 64.5, -15.5]