Task: Program Execution
Input (English): [20, 39, 19, -44, 87, 55, -89, -50, 42, 72, -48, -56, 21, 66, 56]
Output (English): [29.5, 29.0, -12.5, 21.5, 71.0, -17.0, -69.5, -4.0, 57.0, 12.0, -52.0, -17.5, 43.5, 61.0]