In class 61, boys accounted for the total number (2/5), and 5 boys were transferred, now boys account for the total number (5/11), how many girls are there?
六1班原来男生占总数的(2/5)，又转来5名男生，现在男生占总数的(5/11)，女生有多少人？
<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">1 - (5/11)</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">(5/11) / (6/11)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(2/5) / (3/5)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(5/6) - (2/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">5 / (1/6)</gadget>
<output>30</output>

<result>30</result>