Task: Program Execution
Input (English): [29, 77, -61, -32, 68, 48, 15, -28, 4, 6, -73, -12, -55]
Output (English): [53.0, 8.0, -46.5, 18.0, 58.0, 31.5, -6.5, -12.0, 5.0, -33.5, -42.5, -33.5]