2.241 approximate quantities

When you want to emphasize how large a number is without stating it precisely, you can use 'dozens', 'hundreds', 'thousands', 'millions', and 'billions' in the same way as cardinals followed by 'of'.

• That's going to take hundreds of years.
• ...hundreds of dollars.
• We travelled thousands of miles across Europe.
• ...languages spoken by millions of people.
• We have dozens of friends in the community.

You can put 'many' in front of these plural forms.

• I have travelled many hundreds of miles with them.