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:
[1, 77, 55, -37, -65, 80, 31, -37, -61, 3, -80]

Ex Output:
[39.0, 66.0, 9.0, -51.0, 7.5, 55.5, -3.0, -49.0, -29.0, -38.5]


Ex Input:
[-32, 35, -68, -34]

Ex Output:
[1.5, -16.5, -51.0]


Ex Input:
[-84, 73, -56, -43, 58, -36, -76, 48, 47, 27, 68, -47, -93, 31]

Ex Output:

[-5.5, 8.5, -49.5, 7.5, 11.0, -56.0, -14.0, 47.5, 37.0, 47.5, 10.5, -70.0, -31.0]