Malam has invested in a stock in January 2019.She has paid 20$ per share and has purchased 500 shares. She sold her shares in December 2019 for $24 per share. In 2019, she received $0.60 dividend per share. Assume marginal tax rate is 40% and she is not eligible for dividend tax credit. Calculate the total dollar amount of taxes she needs to pay in her investment? (Answer is 520). Explain how?