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To find out how much you pay your creditor each month for the luxury of using credit go through these steps:
1. Subtract your payment from the balance: $100. $25 = $75.
2. Look up the annual interest rate for your card, then figure what the monthly rate would be. Yearly rate, 18% (.18) divided by 12 months = .015
3. Multiply your answer by the monthly interest rate: $75 x .015 = $1.125
4. Add the answers of steps 1 & 2: $75.00 (payment) + 1.13 (interest) = $76.13
Your new balance is $76.13. You paid your creditor $1.13 this month for the luxury of owning a credit card.
5. Find the new balance for each month by going through the above steps.
You may want to include formula for calculating total payments over time.
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