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:
[-36, 17, -25, -21, 45, 34, -39, 21, 71]

Ex Output:
[-9.5, -4.0, -23.0, 12.0, 39.5, -2.5, -9.0, 46.0]


Ex Input:
[-68, 93, -7, 31, -45, -70, -28, 78]

Ex Output:
[12.5, 43.0, 12.0, -7.0, -57.5, -49.0, 25.0]


Ex Input:
[70, 99, 14, 48, 53, 40, -73, -41, -63, -3, 27, 10]

Ex Output:

[84.5, 56.5, 31.0, 50.5, 46.5, -16.5, -57.0, -52.0, -33.0, 12.0, 18.5]