How do you find the simple interest?

To find simple interest, you can use the formula: ( \text{Interest} = P \times r \times t ), where ( P ) is the principal amount (the initial sum of money), ( r ) is the annual interest rate (as a decimal), and ( t ) is the time the money is invested or borrowed for, in years. Multiply these three values together to calculate the total interest earned or paid over that period.