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: [-4, 7, 3]
Example output: [1.5, 5]
Example explanation: To create the answer, we should first calculate the average of -4 and 7, that is: (-4 + 7 ) / 2 = 1.5, so the first element of the answer is 1.5. Then, we need to calculate the average of 7 and 3, that is: 5. So the second element of the answer is 5.
Q: [9, -75, 80, 29, 84, -15, 3, 32, -10, 59, 15, 14, 47, -69, -11]
A:
[-33.0, 2.5, 54.5, 56.5, 34.5, -6.0, 17.5, 11.0, 24.5, 37.0, 14.5, 30.5, -11.0, -40.0]