ABC Company is expecting annual EBIT $$126$ million indefinitely. The debt$-$to$-$equity ratio is $0\mathrm{.}5$ The corporate tax rate is $35\%.$ Cost of equity is $18\%,$ and cost of debt is $4\mathrm{.}2\%(1)$ What is the WACC of ABC Company? What is the current firm value? What is the debt value? $(2)$ What is ABC's unlevered cost of capital? $(3)$ What is the present value of the interest tax shield?