Two students participated in an application problem competition. Li Jun has done 12 questions, accounting for (2/3) of the total number of questions, and Wang Ying has done (5/6) of the total number of questions. Wang Ying has done a few questions ?
两位同学参加一次应用题比赛，李军已做了12题，占总题数的(2/3)，王英已做了总题数的(5/6)，王英做了几道题？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 / (2/3)</gadget>
<output>18</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">18 * (5/6)</gadget>
<output>15</output>

<result>15</result>