In one year, there were $2.5 trillion in credit card transactions. Since 1 year has 365 days and 1 trillion is a 1 with 12 zeros after it, the daily average is given as
[tex]\frac{2,500,000,000,000}{365}[/tex]
which gives
[tex]6849315068.4931506849315068493151[/tex]
There are 8 zeros in 1 hundread million, then by rounding this result to the nearest hundred million dollars, the answer is 6,800,000,000
