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:
[89, -29, -43, 99, -63, -80, -73, -50, -58]

Ex Output:
[30.0, -36.0, 28.0, 18.0, -71.5, -76.5, -61.5, -54.0]


Ex Input:
[19, -40, -19, 7, 57, 87, -71, 17, 29, 60, 14, 61, 10, 71, 93]

Ex Output:
[-10.5, -29.5, -6.0, 32.0, 72.0, 8.0, -27.0, 23.0, 44.5, 37.0, 37.5, 35.5, 40.5, 82.0]


Ex Input:
[51, 93, 57, -21, 85, 29, -55, 84, -37]

Ex Output:

[72.0, 75.0, 18.0, 32.0, 57.0, -13.0, 14.5, 23.5]