円 (Kanji for yen/circle)

Onyomi

EN	This one consists of George Michael's Moustache, plus 2 boxes, which we'll call his gleaming front teeth. If you ENjoyed George Michael's Moustache, please tip him one yen. In response, he smiles, you can see his two front teeth peeking at you from under the 'stache.

まる*い	circircular　(not used! People use the OTHER まるい　（丸い） instead) ★☆☆☆☆
えん	yen! ★★★★★

十円(じゅうえん)	ten yen. ★★★★★ 十 (ten) + 円 (yen/circle) = 十円 (ten yen.)
七千円(ななせんえん)	７，０００ yen. ★★★★★ 七 (seven) + 千 (thousand) + 円 (yen/circle) = 七千円 (７，０００ yen.)
百円(ひゃくえん)	１００ yen ★★★★★ 百 (hundred) + 円 (yen/circle) = 百円 (１００ yen)
一億円(いちおくえん)	100,000,000 YEN ★★☆☆☆ 一 (one) + 億 (a hundred million) + 円 (yen/circle) = 一億円 (100,000,000 YEN) 100,000,000 YEN,　 AKA what Maneki-neko wants!