"Four hundred seventy two!?" The incredulous words slip out before Chouji realizes he's being rude. His apology is stilted and sheepish. "I'm sorry, I just... would never have known." After another short pause, he decides he's already been rude, so he might as well ask quietly, "Are you really four hundred seventy two?"

Chouji supposes that anything is possible, given how different some worlds are from his own. This was unexpected, though.