Task: Program Execution
Input (English): [-28, 69, -74, 54, 99, -19, -5, 47, -80, 87, 69, -98, -60]
Output (English): [20.5, -2.5, -10.0, 76.5, 40.0, -12.0, 21.0, -16.5, 3.5, 78.0, -14.5, -79.0]