In accounting, the debt-to-equity ratio is also the liability-to equity ratio. To get this ratio, you just have to divide the amount of liabilities by the amount of equity. Therefore,
DTE ratio = $18,447,000 / $12,900,000
DET ratio = 1.43
The DET ratio is used to determine the company's leverage. A DET ratio>1 would mean that the company has more debt than assets, which is unsatisfactory.