The price of a box of biscuits is 8 yuan, and the price of a box of chocolates is twice that of this box of biscuits. What is the price of a box of chocolates?
一盒饼干的价格是8元，一盒巧克力的价格是这盒饼干的2倍，一盒巧克力的价格是多少元．
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>