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: [-18, -74, -7, 59, -76, -57, -99, 65]
Example Output: [-46.0, -40.5, 26.0, -8.5, -66.5, -78.0, -17.0]

Example Input: [89, -29, -43, 99, -63, -80, -73, -50, -58]
Example Output: [30.0, -36.0, 28.0, 18.0, -71.5, -76.5, -61.5, -54.0]

Example Input: [-31, -98, -40, -50, -42, -86, 56, 45, -81, 77]
Example Output:
[-64.5, -69.0, -45.0, -46.0, -64.0, -15.0, 50.5, -18.0, -2.0]