Learn how mortgages work, how to use a mortgage calculator, and how to use a spreadsheet to show the payoff of a mortgage over time and the interest paid each year. [Click here to download the spreadsheet from the video](https://docs.google.com/spreadsheets/d/1Zltc3F3H8n0WxKfqoyMEJuc1vXfORPu2m-a80q9Rm9s/edit?usp=sharing).
License: CC BY-NC-SA by Khan Academy