Task: Program Execution
Input (English): [91, 12, -46, -4, 71, -85, 79, -75, -39, 98, -74, 12, 80]
Output (English): [51.5, -17.0, -25.0, 33.5, -7.0, -3.0, 2.0, -57.0, 29.5, 12.0, -31.0, 46.0]