来自《耶鲁大学开放课程：金融理论 第7集 第7集》

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  equal to the principal.
  等同于本金
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  So we just saw it was 8,888 a year.
  我们已知要付8888
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  And there's one more little twist with mortgages.
  另外有关抵押这个概念
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  So that's not literally true what I said.
  我刚才说的并不完全正确
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  Mortgages have monthly payments.
  抵押金可以按月给付
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  There are monthly payments and so the monthly rate--
  所以有月给付和月利率
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  at monthly rate equal the coupon divided by 12.
  月利率等于票面值除以十二
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  So if it's an 8 percent mortgage then it means
  如果是利率为百分之八的抵押贷款
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  that they're taking 2 thirds
  它会收走三分之二的贷款额
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  so in this case we'd have 8 percent over 12
  百分之八的利率除以十二
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  which equals 2 thirds of a percent.
  差不多等于百分之六十几
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  So the mortgage would be point 67 percent,
  贷款利息是总额的百分之零点六七