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:
[18, -97, -66, -82, -74, 44, 15, 1, 79, -3]

Ex Output:
[-39.5, -81.5, -74.0, -78.0, -15.0, 29.5, 8.0, 40.0, 38.0]


Ex Input:
[31, 33, 27, 25]

Ex Output:
[32.0, 30.0, 26.0]


Ex Input:
[71, 48, -80, 32, -75, 67, -4, -81, 90, 42, -39, 25, 4, -45, 84]

Ex Output:

[59.5, -16.0, -24.0, -21.5, -4.0, 31.5, -42.5, 4.5, 66.0, 1.5, -7.0, 14.5, -20.5, 19.5]