I’ve been working on this week’s Listener puzzle — a number puzzle this week, called “Number or Nummer” — for only about twelve minutes, and I’ve already narrowed down the possibilities to just 393,120.

**Later:** Is too much to ask in a number puzzle to have math that looks like math? With minus signs (HTML code: `−`

) or at least en dashes (`–`

) instead of hyphens, and exponents that are actually raised (`<sup>2</sup>`

) and not just in a different font?

Plus: In the clue for 13 Across, which is in the form X − Y / Z, could you maybe have added parentheses so we could be 100% sure whether you mean X − (Y / Z) or (X − Y) / Z? I hope I find out I’m wrong, but I have a growing suspicion that you mean the latter.

**Still later:** The order of operations in 13 Across is correct.