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: [82, -37, 81]

Output: [22.5, 22.0]


Input: Consider Input: [-12, -89]

Output: [-50.5]


Input: Consider Input: [-54, 35, -77, 2, -48, 41, -42, -19, -40, -84, -72]


Output: [-9.5, -21.0, -37.5, -23.0, -3.5, -0.5, -30.5, -29.5, -62.0, -78.0]