There were 42 students from Class 6 (1) squadron participating in the "Ethics of Little Citizens" promotional activity, of which girls accounted for (3/7), and later some girls signed up to participate. At this time, the ratio of girls to boys was 5:6. How many girls later signed up for the campaign?
六(一)班中队有42名同学参加"小公民道德规范"宣传活动，其中女生占(3/7)，后来又有一些女生报名参加，这时女生与男生的比是5：6．后来报名参加宣传活动的有多少名女生？
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">42 * (3/7)</gadget>
<output>18</output>

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

<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">(4/7) / (6/11)</gadget>
<output>22/21 = around 1.047619</output>

<gadget id="calculator">42 * (22/21)</gadget>
<output>44</output>

<gadget id="calculator">44 - 42</gadget>
<output>2</output>

<gadget id="calculator">18 + 2</gadget>
<output>20</output>

<result>20</result>