Task: Program Execution
Input (English): [-11, -4, -47, 89, 65, 48, -30, -73, -45, -36, 68, 78, -50, 91, 18]
Output (English): [-7.5, -25.5, 21.0, 77.0, 56.5, 9.0, -51.5, -59.0, -40.5, 16.0, 73.0, 14.0, 20.5, 54.5]