Task: Program Execution
Input (English): [2, 57, -9, -21, -21, -58, 78, 34, -24, 7, 57, 4, 30, -87]
Output (English): [29.5, 24.0, -15.0, -21.0, -39.5, 10.0, 56.0, 5.0, -8.5, 32.0, 30.5, 17.0, -28.5]