; or (II) for 6 years (or the equivalent calculated under subparagraph (B)(i)), in the case of a borrower described in clause (i)(II), and then qualifies for loan cancellation under paragraph (1) for a seventh year (or the equivalent calculated under subparagraph (B)(ii)), all of the borrower's remaining obligation to repay the balance of principal and interest due, as of the date of such calculation, on all of the eligible Federal Direct Loan made to a borrower. (B) Special rule regarding part-time teaching (i) General rule In the case of a borrower who qualifies for loan cancellation under subparagraph (A) for one or more years through a part-time qualifying teaching position, the Secretary shall determine when the equivalent of 6 years of partial cancellation for full-time employment has been met for purposes of subparagraph (A)(ii)(II) by giving the borrower credit for one-half of a year for each year that the borrower receives partial part-time cancellation under subparagraph (A)(i)(II)(bb). (ii) Rule for final cancellation A borrower who wishes to complete the equivalent of the seventh year of teaching necessary for complete cancellation under subparagraph (A)(ii)(II) through employment in a part-time qualifying teaching position— (I) shall be required to qualify for loan cancellation through a part-time qualifying teaching position for 2 additional years