The switcheroo happens in every three-digit group: When you read the number 123,123,123 out loud, you say "drei(3)-und-zwanzig(20)" three times. (I've used co

The switcheroo happens in every three-digit group: When you read the number 123,123,123 out loud, you say "drei(3)-und-zwanzig(20)" three times. (I've used comma as the thousand separator here.)