Task: Program Execution
Input (English): [5, 20, -59, -52, 79, 9, 40, 54, -21, 29, -3, -71, -22, 56, 68]
Output (English): [12.5, -19.5, -55.5, 13.5, 44.0, 24.5, 47.0, 16.5, 4.0, 13.0, -37.0, -46.5, 17.0, 62.0]