Rachel died in 2021and her executor is finalizing her estate tax return. The executor has determined that Rachel's adjusted gross estate is $12,750,000 and that her estate is entitled to a charitable deduction in the amount of $500,000. Calculate the estate tax liability, in 2021, for Rachel's estate.

1. $0
2. $220,000
3. $420,000
4. $4,900,000