Thirteen years ago, Mr$.$ Lawton rolled a $$18,000$ retiring allowance into an RRSP that subsequently earned $10\mathrm{.}1\%$ compounded semiannually. Four years ago he transferred the funds to an RRIF. Since then, he has been withdrawing $$1100$ at the end of each quarter. If the RRIF earns $8\mathrm{.}1\%$ compounded quarterly, how much longer can the withdrawals continue? $($Do not round intermediate calculations and round up the number of payments, n$,$ to the next whole number.$)$

years and

months.