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: [-42, 68, -97, 81, 6, 30, 71, 61, -73]

Output: [13.0, -14.5, -8.0, 43.5, 18.0, 50.5, 66.0, -6.0]


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

Output: [-82.0]


Input: Consider Input: [74, 63, 61]


Output: [68.5, 62.0]