Task: Program Execution
Input (English): [-75, -57, 99, 63, 48, -51, 23, -49, 69, 82, 10, 21, -21]
Output (English): [-66.0, 21.0, 81.0, 55.5, -1.5, -14.0, -13.0, 10.0, 75.5, 46.0, 15.5, 0.0]