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: [-21, 12, 53, 49, 2, -54, -28, 8, -77, 27, -33]

Output: [-4.5, 32.5, 51.0, 25.5, -26.0, -41.0, -10.0, -34.5, -25.0, -3.0]


Input: Consider Input: [22, -56]

Output: [-17.0]


Input: Consider Input: [28, 69, -3, 2, 73, -77, 51, -74, 83, 60, -33, -5, 36]


Output: [48.5, 33.0, -0.5, 37.5, -2.0, -13.0, -11.5, 4.5, 71.5, 13.5, -19.0, 15.5]