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:
[-27, -64]

Ex Output:
[-45.5]


Ex Input:
[-79, 58]

Ex Output:
[-10.5]


Ex Input:
[16, -83, 18]

Ex Output:

[-33.5, -32.5]