In $2020,$ Killer Cough Ltd earned gross profits of R$580000.$ Killer Cough was financed by a combination of common stock and R$1\mathrm{.}5$ million of preferred stock. The dividend yield on the preferred stock was $7\%$ and the corporate tax rate was $21\%.$ What is the profit available for common stockholders after payment of preferred dividends and corporate taxes?

Group of answer choices

R $520400$

R $353200$

R $417600$

R $475000$

None of the above