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:
[64, -5, -29]

Ex Output:
[29.5, -17.0]


Ex Input:
[-74, -2]

Ex Output:
[-38.0]


Ex Input:
[58, 100, 62, -50, 45, -21, -82, -63, -91, 40, 75, -18, 9, -25]

Ex Output:

[79.0, 81.0, 6.0, -2.5, 12.0, -51.5, -72.5, -77.0, -25.5, 57.5, 28.5, -4.5, -8.0]