A school organizes a trip. Those who go to Beijing account for (2/5) of the total number of people, those who go to Hainan (2/7), and the rest go to Jiuzhaigou. What percentage of the total number of people go to Jiuzhaigou?
某学校组织旅游，去北京的占总人数的(2/5)，去海南的总人数的(2/7)，剩下的去九寨沟旅游，去九寨沟旅游占总人数的几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/5) - (2/7)</gadget>
<output>11/35 = around 0.314286</output>

<result>11/35 = around 0.314286</result>