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:
[91, 12, -2, 74, -96, 64, 58, -44, -31, 38, 1, -26, -88, -67, 80]

Ex Output:
[51.5, 5.0, 36.0, -11.0, -16.0, 61.0, 7.0, -37.5, 3.5, 19.5, -12.5, -57.0, -77.5, 6.5]


Ex Input:
[38, 58, 14, -58, 77, -41]

Ex Output:
[48.0, 36.0, -22.0, 9.5, 18.0]


Ex Input:
[-78, 59, -90, -94]

Ex Output:

[-9.5, -15.5, -92.0]