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:
[-19, 3, -82, 68, -38, 19, -48, -86]

Ex Output:
[-8.0, -39.5, -7.0, 15.0, -9.5, -14.5, -67.0]


Ex Input:
[-96, -73]

Ex Output:
[-84.5]


Ex Input:
[-24, -14, -89, 40, -4, -40]

Ex Output:

[-19.0, -51.5, -24.5, 18.0, -22.0]