Mortgage Calculator to calculate your monthly payment for a loan including principal and interest. You can start the skill by saying "open mortgage calculator" or "start mortgage calculator". Once it starts, it will give you a brief description and ask you if you are ready. If you say no, it will exit. If you say yes, it will continue to ask you three questions. First, it will ask for your principal amount and then your interest rate and then your term in years. Once you answer all these questions, it will say out your monthly payment. You can start over anytime in the middle or at the end as well. When you start over, all your values get cleared and it starts over fresh. It also gives you an example of how to answer the questions when it asks each question. Hope this helps!