I'm Having Trouble figuring out the present value of equity for this problem. Could someone help guide me?

I'm Having Trouble figuring out the present value of equity for this problem. Could someone help guide me?

Debt holders receive debt that pays them coupons of $2 million a year, and $30 million after 20 years (these are expected values as the coupons and principal payments are not riskless, the debt buyers realize the firms could default). They price the debt using a discount rate of 4 percent. Equity holders receive expected dividends of $3 million starting from year 5, and growing at a rate of 4 percent per year (a growing perpetuity). They price the equity using a discount rate of 7.5 percent.