In the three nine months ended September 30, 2019, the aggregate principal repayments of $1,850,000 and $3,381,000, respectively, and 89,332 and $112,293 of corresponding non-installment payments, respectively, were settled by the issue of 2,334,186 and 3,850,427 shares of common stock of the Company, respectively, resulting in a debt extinguishment loss in the three and nine months ended September 30, 2019, of $406,858 and $666,670, respectively, summarized as follows: