How many mortgage payments would $8000 make?

The federal government has extended the $8000 tax credit, they've added a $6500 tax credit, and they're hoping that these will stimulate the housing economy. Many skeptical folks say that $8000 is pennies in light of the cost of a home, not worth the effort. My question to you is this: How many mortgage payments will $8000 make?

Take a look at this great home in Fife, WA, centrally located between Seattle and Tacoma, for only $285,000. If you bought this great home for sale in Fife and got the $8000 returned, how many free months of living is that? Pretty intriguing.