Spending for goods and services in 2013 by general purpose-type credit, debit, and prepaid cards issued in the United States reached $4.530 trillion. Market share is shown for credit, debit, and prepaid.

1. Credit Purchase Volume $2.399 Tril.
2. Debit Purchase Volume $1.949 Tril.
3. Prepaid Purchase Volume $0.182 Tril.

The Boston Globe reported that "merchants in the United States spent $71.7 billion on fees (for these transactions) last year."

(A) What is the average merchant fee, as a percentage?

(B)Make sense of the $4.530 Trillion total: Think about it in units like dollars per person per day, dollars per transaction.