Task: Program Execution
Input (English): [21, 50, 54, -89, -61, -81, 7, 4, 99, -96, 12, 20]
Output (English): [35.5, 52.0, -17.5, -75.0, -71.0, -37.0, 5.5, 51.5, 1.5, -42.0, 16.0]