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].

[-2, -42, -39, -86, 10, 21, 97, -86, -30, -52, -68, 88, -75]
[-22.0, -40.5, -62.5, -38.0, 15.5, 59.0, 5.5, -58.0, -41.0, -60.0, 10.0, 6.5]