Javier is currently paying $1,200 in interest on his credit cards annually. If, instead of paying interest, he saved this amount every year, how much would he accumulate in a tax-deferred account earning 7 percent over 11, 16, or 21 years?

If, instead of paying interest, this amount was saved every year in a tax-deferred account earning 7 percent over 11 years, the amount accumulated would be $.