It is sort of working at http://www.calchemy.com
At least the answers are right, but the UI is still kind of messed up, the answer should be printed at the bottom, not in another page...
You were right the first time, the book has it wrong (yes, it does happen sometimes).
You can evaluate the equation directly using a program called calchemy. Here is it's "evaluation" of the equation:
0.04 g / min m^3 ? lbm / hr ft^3
(0.04 * gramm) / (minute * [meter^3]) ? poundm / (hour *...