何なん階かいnankaiwhat floorBreakdown of nankai何なんnanwhat〜階かい〜kaifloor counterUsages of nankai何なん階かい に 行いきます か?nankai ni ikimasu ka?To what floor are you going?Elon.io is an online learning platformWe have hundreds of Japanese lessons and thousands of exercises.Start learning Japanese nowYour questions are stored by us to improve Elon.io