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: [97, -97, 10]

Output: [0.0, -43.5]


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: [-100, -45, 23, 81, 90, 54]


Output: [-72.5, -11.0, 52.0, 85.5, 72.0]