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].

Example Input: [-2, -57, 85, -7, 81, 57, -60, -87, -18]
Example Output: [-29.5, 14.0, 39.0, 37.0, 69.0, -1.5, -73.5, -52.5]

Example Input: [65, 82, -67, -51]
Example Output: [73.5, 7.5, -59.0]

Example Input: [-35, -87, 84, 52]
Example Output:
[-61.0, -1.5, 68.0]