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:
[-19, 3, -82, 68, -38, 19, -48, -86]

Ex Output:
[-8.0, -39.5, -7.0, 15.0, -9.5, -14.5, -67.0]


Ex Input:
[68, -24, 24]

Ex Output:
[22.0, 0.0]


Ex Input:
[-47, 60, 21, 47, 63, 68, -83, -46, -59, 32, 94, 73, 0, 5, 77]

Ex Output:

[6.5, 40.5, 34.0, 55.0, 65.5, -7.5, -64.5, -52.5, -13.5, 63.0, 83.5, 36.5, 2.5, 41.0]