Any Isaac Asimov Sci-Fi Short Stories with Happy Endings?

[Guttersnipe]

Are there any short sci-fi stories by Asimov with happy, even if ironic, endings? It's become an obsession of late. I'm not very familiar with Asimov at all. Stand-alone stories, if you can, and not necessarily part of a series or attached to a novel, as I've seen there are many of those.

 

[Toby Frost]

I don't know if Asimov wrote many isolated short stories: a lot of his were part of a sequence. Some of the robot stories, particularly the Powell and Donovan ones, are about a problem that arises and is then solved. I suppose that's a sort of happy ending.