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:
[-37, 76, -35, 6, -72, 89, -100, -9, -81, 73, 90, -20]

Ex Output:
[19.5, 20.5, -14.5, -33.0, 8.5, -5.5, -54.5, -45.0, -4.0, 81.5, 35.0]


Ex Input:
[-19, 17, -76, 38, 49, -1, 98, -89, -27, 49, 6, 44, 81, 0, 80]

Ex Output:
[-1.0, -29.5, -19.0, 43.5, 24.0, 48.5, 4.5, -58.0, 11.0, 27.5, 25.0, 62.5, 40.5, 40.0]


Ex Input:
[59, -82, 45, -80, 74, 53, -98, 89, 50, 14]

Ex Output:

[-11.5, -18.5, -17.5, -3.0, 63.5, -22.5, -4.5, 69.5, 32.0]