Task: Program Execution
Input (English): [-15, -30, -38, 81, -73, 2, -83, -89, -42, -71, 11, -32, 20]
Output (English): [-22.5, -34.0, 21.5, 4.0, -35.5, -40.5, -86.0, -65.5, -56.5, -30.0, -10.5, -6.0]