Simplify the following text for a Grade 5 native English-speaking person.
Original: The imperial version is 20 imperial fluid ounces and is equivalent to about 568 ml , while the U.S. version is 16 U.S. fluid ounces and is equivalent to about 473 ml . Thus the traditional British pint of beer is approximately 20 % larger than the American pint .
Simplified: It is divided into 20 fluid ounces .