A fire has destroyed a large percentage of the financial records of the Carter Health System. You have the task of piecing together information to prepare a financial report. You have found the profit margin to be 5.4 percent. If sales were $4 million on total assets of $2 million, and the amount of debt financing was $800,000, what was Carter's return on equity (ROE)? (Hint: Use the Du Pont equation to answer this question.)

I know the answer is 18% i need someone to show me how you got it