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:
[66, -73, -61, -3, 2, -47, -91, 97, 58, -62, 81, -71, -43, -40, -65]

Ex Output:
[-3.5, -67.0, -32.0, -0.5, -22.5, -69.0, 3.0, 77.5, -2.0, 9.5, 5.0, -57.0, -41.5, -52.5]


Ex Input:
[61, -99, -96]

Ex Output:
[-19.0, -97.5]


Ex Input:
[-59, -75, 53, -64, 71, -92, 13, -25, 3, -71, 53]

Ex Output:

[-67.0, -11.0, -5.5, 3.5, -10.5, -39.5, -6.0, -11.0, -34.0, -9.0]