Task: Program Execution
Input (English): [55, 31, 30, -58, -45, 38, -17, -72, 98, 6, -13, -42]
Output (English): [43.0, 30.5, -14.0, -51.5, -3.5, 10.5, -44.5, 13.0, 52.0, -3.5, -27.5]