There are more than forty people in a class. The number of applicants for a math competition is 1/6 of the number of unregistered people. Later, some students signed up to participate. At this time, the number of applicants is 1/5 of the number of unregistered people. Students sign up?
一个班有四十多人，一次数学竞赛报名人数是未报名人数的(1/6)，后来又有同学报名参加，这时报名人数是未报名人数的(1/5)，后来又有多少同学报名参加？
<gadget id="calculator">1 + 5</gadget>
<output>6</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">42 * (1/6)</gadget>
<output>7</output>

<gadget id="calculator">1 + 6</gadget>
<output>7</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">42 * (1/7)</gadget>
<output>6</output>

<gadget id="calculator">7 - 6</gadget>
<output>1</output>

<result>1</result>