They go back to this formula. If you sold it after five years, then there are twenty-five years left, so 25 x 12 is the number of months left; they plug that into this formula.

如果五年后卖掉房子,他们又搬出公式,此时剩余期限是20五年,所以剩余月份数是25乘以12,把月份数代入这个公式

youdao

The general calculation formula most financial institutions use to determine the amount of interest to be charged is APR/100 x ADB/365 x number of days revolved.

大多数金融机构用以确定利息数额的计算公式是年利率/100x日平均余额/365x天数。

youdao

This formula syntax is a little tricky: inside the I calls, the arithmetic symbols have their usual meanings, so the first I , for example, means: 2 times PI times x, divided by 365.

这个公式语法有些复杂：在I调用内部，算术符号与它们通常的含义相同，所以，例如第一个I表示：2乘pi乘x，再除以365。

youdao

They go back to this formula. If you sold it after five years, then there are twenty-five years left, so 25 x 12 is the number of months left; they plug that into this formula.

如果五年后卖掉房子,他们又搬出公式,此时剩余期限是20五年,所以剩余月份数是25乘以12,把月份数代入这个公式

耶鲁公开课 - 金融市场课程节选