The food store shipped a total of 14 baskets of eggs and duck eggs for festival supply, of which duck eggs accounted for 3/7 of the total baskets. Due to supply needs, several baskets of duck eggs were shipped in, and duck eggs accounted for 50% of the total baskets. How many baskets of duck eggs were shipped later?
食品商店运来鸡蛋和鸭蛋共14筐准备节日供应，其中鸭蛋占总筐数的(3/7)，因供应需要，又运来几筐鸭蛋，这时鸭蛋占总筐数的50%．后来又运来多少筐鸭蛋？
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1 - (3/7)</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(4/7) / (1/2)</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">14 * (8/7)</gadget>
<output>16</output>

<gadget id="calculator">16 - 14</gadget>
<output>2</output>

<result>2</result>