Hello how may I help you? How much do I owe in late fees? It looks like you currently owe $16.32 in late fees What?For which books? For one copy of Harry Potter and the Sorcerer's Stone which has been overdue for 16 weeks Do you accept bitcoins? We do not, currently only accept Visa/Mastercard and cash in person Here's 2000 pennies. Keep the change I have processed your payment. ANything else I can help with? No thanks Have a good day!