To solve for the missing box, you can rewrite the equation as . When you do the division, you’ll find that the box equals 0.01, or 1%. This demonstrates a useful concept: understanding percentages in financial calculations can transform seemingly huge figures into more manageable numbers!

While you’re calculating, it’s important to keep an eye out for common mistakes, like forgetting to convert dollars properly, or misplacing the decimal. If needed, always double-check by reversing your operation: multiply your answer by $66.00 to see if you get back to $0.66! This will help you catch any sneaky errors before they slip through the cracks.