"I'm Sorry"

This story about a girl that her language in English very terrible. .
One day she was crash with US tourist when she walk at the mall.
Girl:"I'm sorry"
Us tourist:"I'm sorry too"
The girl become confused, because don't understand what the us tourist say. She just guest and directly answer it. .
Girl:"I'm sorry three"
Us Tourist:"what are you sorry for?"
Girl:"I'm sorry five". .
Us Tourist:??????