Task: Program Execution
Input (English): [28, 77, 38, -15, 98, 34, 13, -68, 25, -15, 57, -86]
Output (English): [52.5, 57.5, 11.5, 41.5, 66.0, 23.5, -27.5, -21.5, 5.0, 21.0, -14.5]