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: [-13, 31, 0, 53]

Output: [9.0, 15.5, 26.5]


Input: Consider Input: [13, -16, 74, -48, 53, 39, -49]

Output: [-1.5, 29.0, 13.0, 2.5, 46.0, -5.0]


Input: Consider Input: [77, -40]


Output: [18.5]