Human: How do you calculate the interest rate of a loan? Assistant: 
To calculate the interest rate of a loan, you need to know the interest rate type (fixed, variable, or adjustable). You will also need to know the terms of the loan, such as the loan amount, the repayment period, and any fees associated with the loan. Once you know all the necessary information, you can use an online interest rate calculator to compute the total interest rate of the loan.