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].

[-12, -11, -13, 37, 73, -7, -15, 62, 1, 5, 93, -30, 21, 29, 99]
[-11.5, -12.0, 12.0, 55.0, 33.0, -11.0, 23.5, 31.5, 3.0, 49.0, 31.5, -4.5, 25.0, 64.0]

[-72, 43, 78, -30, 53]
[-14.5, 60.5, 24.0, 11.5]

[-71, -46, -70, 3, 15, 20, 7, -22, 8, -52, 26]

[-58.5, -58.0, -33.5, 9.0, 17.5, 13.5, -7.5, -7.0, -22.0, -13.0]