In Fiscal year $2018,$ Firm A had a revenue of $14\mathrm{.}09$M$,$ gross profit of $7\mathrm{.}97$M$,$ and net income of $5\mathrm{.}50$M$.$ Firm B had a gross profit margin of $54\%,$ Revenues for $66\mathrm{.}3$M and its difference between gross profit and net profit was $32\mathrm{.}9$M$.$ Which firm was more profitable in $2018?($Hint: Calculate the net profit margin for firm B$)$