Task: Program Execution
Input (English): [17, -35, 70, -87, -17, 90, 66, -19, 86, -91, -30, 53, 51]
Output (English): [-9.0, 17.5, -8.5, -52.0, 36.5, 78.0, 23.5, 33.5, -2.5, -60.5, 11.5, 52.0]