A dress costs $50$ RMB$.$ The initial shipping cost $($domestic to international$)$ is $2$ USD. The return rate is $15\%.$ A commission of $17\%$ is charged on the selling price. The delivery fee is $3\mathrm{.}5$ USD. What should be the selling price to achieve a profit margin of $20\%($exchange rate: $6\mathrm{.}5)?$