A certain class of girls accounted for (2/11) of the whole class, and later transferred to 4 girls, at this time girls accounted for (1/4) of the whole class, how many boys are there now?
某班女生占全班人数的(2/11)，后来转入4个女生，这时女生占全班人数的(1/4)，现在男生有多少人？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">11 - 2</gadget>
<output>9</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(1/3) - (2/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">4 / (1/9)</gadget>
<output>36</output>

<result>36</result>