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:
[87, 22, 13, 9, -28, -51, -58, -11, 40, 60, 25]

Ex Output:
[54.5, 17.5, 11.0, -9.5, -39.5, -54.5, -34.5, 14.5, 50.0, 42.5]


Ex Input:
[-18, 63, 49, 17, 1]

Ex Output:
[22.5, 56.0, 33.0, 9.0]


Ex Input:
[-58, 47, 0, -35, 56, 10, 100, 9, -24, -16, 33, 70]

Ex Output:

[-5.5, 23.5, -17.5, 10.5, 33.0, 55.0, 54.5, -7.5, -20.0, 8.5, 51.5]