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.

Seventeen fifty? We'll make it 1750,
for, like, you know, interest.
Breaking Bad Season 2, Episode 4

Yeah, Jesse, street's maybe 17, 18.
Seventeen.
Breaking Bad Season 2, Episode 5

(IN NORMAL VOICE)
Seventeen! The larger ogre is dead.
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(IN NORMAL VOICE)
Seventeen! The larger ogre is dead.
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(IN NORMAL VOICE)
Seventeen! The larger ogre is dead.
The Big Bang Theory Season 6, Episode 23

Hundred and SEVENTEEN
thousand BTUs.
Breaking Bad Season 2, Episode 10

Seventeen.
The Big Bang Theory Season 5, Episode 4