訓 まる(い) ・ 音 エン
Sino-Vietnamese: viên
A simplified form of 圓 (round), now the yen. Think of a round coin flattened into a squared-off frame to save strokes.
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
それは五百円です。 (それはごひゃくえんです)
That is 500 yen.