You need to estimate the value of Laputa Aviation. You have the following forecasts $($in millions of dollars$)$ of its profits and of its future investments in new plant and working capital:

Year

$1234$

Earnings before interest, taxes, depreciation, and amortization $($EBITDA$)$ $ $85$ $ $105$ $ $120$ $ $125$

Depreciation $25354045$

Pretax profit $60708080$

Tax at $30\%18212424$

Investment $14172022$

From year $5$ onward, EBITDA, depreciation, and investment are expected to remain unchanged at year$-4$ levels. Laputa is financed $50\%$ by equity and $50\%$ by debt. Its cost of equity is $16\%,$ its debt yields $7\%,$ and it pays corporate tax at $30\%.$