A company organizes tourism, and those who travel to Beijing account for (2/5) of the total number of people, those who travel to Hainan account for (2/7) of the total number of people, and the rest go to Qingdao to travel, and those who travel to Qingdao account for a fraction of the total number of people Several?
某公司组织旅游，去北京旅游的占总人数的(2/5)，去海南旅游的占总人数的(2/7)，剩下的去青岛旅游，去青岛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>