Task: Program Execution
Input (English): [89, 18, -30, -73, -80, 25, -90, -20, -59, 11, 69, 18]
Output (English): [53.5, -6.0, -51.5, -76.5, -27.5, -32.5, -55.0, -39.5, -24.0, 40.0, 43.5]