Capital struture related question, please help with d,f,g thanks in advance

Magic Machines Inc. (MM), a mature industrial company, expects an earning of $90 million next year (year 1 ) from its existing assets, which will continue perpetually. MM has no growth opportunities and will payout all its earnings. There are no corporate taxes. The cost of capital for MM's assets is 10%. The risk-free interest rate is 5% (for all maturities). (a) What is the current market value MM's assets? million dollars (b) Suppose MM is initially 100% equity financed, i.e., 100% owned by its shareholders. What is MM's total value of equity? million dollars Suppose that MM intends to finance itself with partial equity and partial debt. It can issue a perpetual debt with annual riskfree interest payment of $10 million. (c) What would be the present value of this debt? million dollars Suppose that MM Inc issues this debt and uses the cash raised to pay off equity holders (retiring part of equity). (d) What is the total cash flow every year from MM's assets after this refinancing operation? million dollars x (e) What is the present value of MM's assets? million dollars (f) What is the total annual payment to the debt holders? million dollars x (g) What is the expected total annual payment to the equity holders? million dollars x