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: [-4, 7, 3]
Example solution: [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.

Problem: [-81, -67, -57, 8, -35, 28, -40, -75, 97, -20, 50, 10, 27, 39]

Solution: [-74.0, -62.0, -24.5, -13.5, -3.5, -6.0, -57.5, 11.0, 38.5, 15.0, 30.0, 18.5, 33.0]