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: [-68, -54, 55]

Output: [-61.0, 0.5]


Input: Consider Input: [-34, -43, 12]

Output: [-38.5, -15.5]


Input: Consider Input: [-51, 41, -49, -57, -88, -6, -34, -16, 31]


Output: [-5.0, -4.0, -53.0, -72.5, -47.0, -20.0, -25.0, 7.5]