Although English is full of irregularities and difficult rules, large numbers are easier to use in English than in languages like Korean or Chinese. As long as you can count in hundreds, much larger numbers are pretty simple.
First, let’s review hundreds:
Once you get higher than hundreds, we use commas to mark each new scale. The first comma denotes thousands:
- 137 One hundred thirty-seven
- 1,137 One thousand one hundred thirty-seven
- 41,137 Forty-one thousand one hundred thirty-seven
- 941,137 Nine hundred forty-one thousand one hundred thirty seven
Between each comma, the numbers are counted in hundreds. After thousands, we find millions.
- 5,941,137 Five million nine hundred forty-one thousand one hundred thirty-seven
- 605,941,137 Six hundred five million nine hundred forty-one thousand one hundred thirty-seven
The next comma gives us billions, then after that, trillions. Numbers do obviously go much higher than that, but unless you’re doing an astrophysics degree, you’re unlikely to see them.