Assume the M&M with corporate taxes. The corporate tax rate is 40%. Your firm is currently unlevered with 100% equity. As of now, the value of the firm’s equity is $400K, and the firm’s cost of capital is 10%. Assume that your firm can borrow at 4% from a bank. Suppose that you decided to lever up by reducing equity and increasing debt. As the result, your firm now has $250K in debt. Your firm plans to maintain this debt amount forever. What is the present value of the interest tax shield?