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: [40, 34, -39]

Output: [37.0, -2.5]


Input: Consider Input: [-12, -20, -43, 3, -38, -4, 34]

Output: [-16.0, -31.5, -20.0, -17.5, -21.0, 15.0]


Input: Consider Input: [-84, -19]


Output: [-51.5]