Fifth Third Bancorp is reporting $235 million in revenue from processing electronic payments for the second quarter ended June 30, up 15% from $205 million in the same period last year. The Cincinnati-based bank attributes a 20% increase in interchange revenue for the quarter to higher debit and credit card use and an increase in the average dollar amount of each debit card transaction, though it did not release specific interchange-revenue or transaction data. Payment-processing expenses during the quarter were $67 million, up 14% from $59 million. Fifth Third charged off $21 million worth of consumer credit card loans during the quarter, more than double the $10 million it charged off for the same period last year. Average credit card receivables during the quarter was $1.7 billion, up nearly 31% from nearly $1.3 billion.