The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

more gold than you can spend
if you lived a THOUSAND years.
Game of Thrones Season 1, Episode 9

Hundred and seventeen
THOUSAND BTUs.
Breaking Bad Season 2, Episode 10

It's been a THOUSAND years,
Game of Thrones Season 2, Episode 5

and out of it poured
a THOUSAND THOUSAND dragons
Game of Thrones Season 1, Episode 2

Eight THOUSAND.
Game of Thrones Season 3, Episode 1