I'm watching a drama and there's a scene with a closeup of a cheque. It shows the box where you would write the amount to pay, which I've parsed as below. What is
金 used for and how is it read?
金額 already specifies it's an amount of money plus there are two different yen symbols used.
金額 ￥ 金壱億伍阡萬円也
(amount)・(yen symbol)・(?)・(一億五千万)・(another yen symbol)・(exact amount / "only")