What does "Alex gets to fifty-seven University Place." mean in English for Spanish?

In English for Spanish, "Alex gets to fifty-seven University Place." means:

Alex llega el cincuenta y siete de University Place.

Listen to "Alex gets to fifty-seven University Place.": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 4, Level 1, Scene 3