can you please show me step by step how to solve this question?

UNT Corp. is expected to pay a $2.50 dividend at year end, the dividend is expected to grow at a constant rate of 7.00% a year, and the common stock currently sells for $52.50 a share. The before-tax cost of debt is 7.50%, and the tax rate is 40%. The target capital structure consists of 45% debt and 55% equity. What is the company's WACC? 5.25% 9.02% 7.76% 8.49% 6.09%