Task: Program Execution
Input (English): [-30, 45, 90, 15, 77, -92, 59, 84, -55, -28, 10, -18, -17]
Output (English): [7.5, 67.5, 52.5, 46.0, -7.5, -16.5, 71.5, 14.5, -41.5, -9.0, -4.0, -17.5]