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:
[43, -57]

Ex Output:
[-7.0]


Ex Input:
[-13, 58, 24, 49, 97]

Ex Output:
[22.5, 41.0, 36.5, 73.0]


Ex Input:
[-7, -55, 81, 11, 72, 47, 49, 75, 85, 52, -85]

Ex Output:

[-31.0, 13.0, 46.0, 41.5, 59.5, 48.0, 62.0, 80.0, 68.5, -16.5]