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: [87, 34, 59, -97, -67, -71, -28, -51, 56]

Output: [60.5, 46.5, -19.0, -82.0, -69.0, -49.5, -39.5, 2.5]


Input: Consider Input: [-37, 76, -35, 6, -72, 89, -100, -9, -81, 73, 90, -20]

Output: [19.5, 20.5, -14.5, -33.0, 8.5, -5.5, -54.5, -45.0, -4.0, 81.5, 35.0]


Input: Consider Input: [-21, 81, -9, 54, 8]


Output: [30.0, 36.0, 22.5, 31.0]