please help me solve this problem, thank you!

- Jill bought a house for $800,000 and sold it for $1 million after 5 years. She made no improvement on the house. -When she was selling, she paid various fees and commissions; the total amount of such costs was 8% of the selling price. - Her average capital gain tax rate was 12% and her marginal capital gain tax rate was 15%. - She was single. - Her after-tax income increased by $ if she took home sale tax exemption