Task: Program Execution
Input (English): [57, 40, 69, 26, -8, -15, 64, -53, 54, -46, 74, 40]
Output (English): [48.5, 54.5, 47.5, 9.0, -11.5, 24.5, 5.5, 0.5, 4.0, 14.0, 57.0]