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.

then the odds of us
surviving here have dropped
to APPROXIMATELY fuck-all.
Westworld Season 2, Episode 5

Your characterization of APPROXIMATELY
171 different men as a few.
The Big Bang Theory Season 4, Episode 1

...at APPROXIMATELY
120 miles an hour, hits them...
The Big Bang Theory Season 1, Episode 2

150 APPROXIMATELY, five or six magazines.
Money Heist Season 1, Episode 9