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: [54, 51, -18]

Output: [52.5, 16.5]


Input: Consider Input: [-79, 58]

Output: [-10.5]


Input: Consider Input: [26, -53, 31, -54, 74, -85, -26]


Output: [-13.5, -11.0, -11.5, 10.0, -5.5, -55.5]