七なな十じゅうnanajuu70Breakdown of nanajuu七ななnanaseven十じゅうjuutenUsages of nanajuu七なな十じゅう 三さんnanajuu san73二に百ひゃく 七なな十じゅう 四よんnihyaku nanajuu yon274二に百ひゃく 七なな十じゅう 四しnihyaku nanajuu shi274Elon.io is an online learning platformWe have hundreds of Japanese lessons and thousands of exercises.Start learning Japanese now