Task: Program Execution
Input (English): [-77, 14, 56, -86, -9, 71, -2, -1, -74, 37, 39, 53]
Output (English): [-31.5, 35.0, -15.0, -47.5, 31.0, 34.5, -1.5, -37.5, -18.5, 38.0, 46.0]