I'm not sure. Maybe thousands.
4 seconds sound clip from the Gremlins movie soundboard.
You can hear this line at 01:01:43 in the Blu-ray version of the movie.
Quote context
[...]
- Gremlins, huh? Little monsters.
- Right.
- I'm not sure. Maybe thousands.
- You think this kid is drunk?
- Tell me something. Where do these little gremlins come from?
- All right. My father gave me one as a present.
[...]