Originally, girls accounted for (2/7) in the art group. After transferring 19 girls, now girls account for (3/8). How many girls are there now?
美术组原来女生占(2/7)，调进19名女生后，现在女生占(3/8)，现在有多少名女生？
<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">7 - 2</gadget>
<output>5</output>

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

<gadget id="calculator">(3/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">19 / (1/5)</gadget>
<output>95</output>

<gadget id="calculator">95 * (3/5)</gadget>
<output>57</output>

<result>57</result>