[neltnerb]

Yes, I am familiar with this system. If anything, being a physicist is all the better reason to want a computer to deal with the units though...

My example was entirely contrived of course, a less contrived one would be estimating how long a gas cylinder will last. The tank name plate might say it has 200 cubic feet (sigh) and you need to flow at 10mL/min. How many months does the tank last? I'm talking about quick engineering tasks, not theory.

BTW, the answer is about 13 months, whatever that is in eV^{-1}:

https://www.google.com/search?hl=en&q=200%20cubic%20feet%20%...

Which took me about 15 seconds to type. Just different use cases.

[kragen]

units(1) can handle this but by default it gives you the answer in seconds.

    You have: 200 ft**3 / (10 mL/min)
    You want: months
     * 12.921493