Ginger divorces Fred, moves to a desert island, and dies. She leaves her estate to her alma mater (Gilligan State U), Mary Ann, the Skipper and the Professor. Her estate is valued at $20 million, and she leaves it equally to the four listed above. The entire $20 million is taxable. 30 points, 10 points per scenario If she died in 2023, how much of the $20 million would have been taxed for estate tax purposes after you take into account charitable deductions and the unified credit shelter equivalent?