ceilings = A: 1000 B: 1500 C: 1800 D: 4000 E: 5000 F: 5200 G: 6000 H: 6800 I: 9000 J: 9730 toDivision = (code) -> for division, ceiling of ceilings return division if code < ceiling "Unknown" sicCodes.map toDivision