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:
[31, -62, 49, -13, -30, -59, 76, 31, 40, -31, -56, -36]

Ex Output:
[-15.5, -6.5, 18.0, -21.5, -44.5, 8.5, 53.5, 35.5, 4.5, -43.5, -46.0]


Ex Input:
[6, 81, 44, 22]

Ex Output:
[43.5, 62.5, 33.0]


Ex Input:
[74, -62, 22, -62, 58, -67, 31, 53, -70, -48, -76]

Ex Output:

[6.0, -20.0, -20.0, -2.0, -4.5, -18.0, 42.0, -8.5, -59.0, -62.0]