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:
[33, -76, 34, -35, 27, 74]

Ex Output:
[-21.5, -21.0, -0.5, -4.0, 50.5]


Ex Input:
[-69, 38, 10]

Ex Output:
[-15.5, 24.0]


Ex Input:
[57, -42, -14, -48, -62, 7, -9]

Ex Output:

[7.5, -28.0, -31.0, -55.0, -27.5, -1.0]