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].
[-13, -2, -82, -66, -62, 53, 20, -67, 17, -85, -52, 56, -14, -83, 55]