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].

Input: Consider Input: [-80, -84]

Output: [-82.0]


Input: Consider Input: [-100, -17, -69, 0, 35, -39, -34, -70, 21, 55, -74, -63]

Output: [-58.5, -43.0, -34.5, 17.5, -2.0, -36.5, -52.0, -24.5, 38.0, -9.5, -68.5]


Input: Consider Input: [-28, 26, 18, 28, -72]


Output: [-1.0, 22.0, 23.0, -22.0]