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, 27, 20, -9]

Output: [40.5, 23.5, 5.5]


Input: Consider Input: [-15, -37, -91, -88, -52, -30, 63, 69, -36, 41, 39, -49, 7, -57, -37]

Output: [-26.0, -64.0, -89.5, -70.0, -41.0, 16.5, 66.0, 16.5, 2.5, 40.0, -5.0, -21.0, -25.0, -47.0]


Input: Consider Input: [-72, -12, 24, -75, 55, -89, 61, -99, -74, 71, 91, 69, 1, -35]


Output: [-42.0, 6.0, -25.5, -10.0, -17.0, -14.0, -19.0, -86.5, -1.5, 81.0, 80.0, 35.0, -17.0]