Five years ago, the Trans purchased a house and took out a mortgage of $$600,000$ from the BMO bank. They amortized the mortgage over $25$ years at $2\mathrm{.}79\%$ compounded semi$-$annually for a $5-$year term. The bank calculated their monthly payment should be $$2,776.$How much interest did they pay in the $4$th year of the mortgage? Question $3$ options:$$62,820\mathrm{.}40$ $$14,966\mathrm{.}73$$$1,377\mathrm{.}31$ $$5,528\mathrm{.}54$ $$21,668\mathrm{.}88$