Three years ago, I bought (a) 1,000 shares of AB company stock for $5 per share AND (b) 500 shares of ZZ stock for $8 per share. This year, I sold my 1,000 shares of AB for $12 per share. I also sold all 500 shares of ZZ stock for $7 per share. I am single and have taxable income of $100,000. According to the Internet reading Capital Gains, what is the dollar amount, if any, of my capital gains tax? (Show your work)