one dollar and eighty cents.鬼佬常常说a dollar eighty.如果你是要写作的话就用第一个,口头的话两个都可以。
one yuan and eighty cent
Dollar octagonal
one point eight yuan我给你一元八角1.i will give you one point eight yuan一元钱或一元钱略少。也说“块儿八角”1.one yuan or less than one yuan