Definition: 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].
Input: [-86, -99, 68, -95, 5, -77, -78, 22, -78, -85, 51, -26]
Output:
[-92.5, -15.5, -13.5, -45.0, -36.0, -77.5, -28.0, -28.0, -81.5, -17.0, 12.5]