There are 56 students in a certain class, of which girls account for (3/7), and how many girls are transferred in the new semester. At this time, girls account for the whole class (1/2), how many girls are transferred?
某班有学生56人，其中女生占(3/7)，新学期又转来几名女生，这时女生占全班的(1/2)，转来女生多少人？
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

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

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(4/7) / (1/2)</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">56 * (8/7)</gadget>
<output>64</output>

<gadget id="calculator">64 - 56</gadget>
<output>8</output>

<result>8</result>