Eagle Corp's current balance sheet shows $$120$ million in debt, $$30$ million in preferred stock, and $$150$ million in total common equity. Its tax rate is $20\%.$

$$ It is largely financed through a series of $20-$year bonds at $5\%$ bonds which are currently selling for $$1025$

$$ Preferred stock: Price $=$ $$40,$ dividend is $$2,$ flotation costs are $5\%$

$$ Return on common stock $($Is$)=8\%.$

a$)$ Calculate its current WACC.

b$)$ If Eagle has a target capital structure of $50\%$ debt, $10\%$ preferred stock, and $40\%$ common stock, what is it$$s WACC?