A firm has current assets that could be sold for their book value of $$7,000,000.$ The book value of its fixed assets is $$3,000,000,$ but they could be sold for $$12,000,000$ today. The firm has total debt at a book value of $$2,500,000,$ but interest rate changes have increased the value of the debt to a current market value of $$4,000,000.$ This firm's equity market$-$to$-$book ratio is $\_\_\_\_\_\_\_\_."$