The number of girls in the school's track and field team originally accounted for (1/3), and later 18 girls joined in, so the ratio of girls to the total number of track and field teams is 4:9. How many girls are there in the track and field team now?
学校田径组原来女生人数占(1/3)，后来又有18名女生参加进来，这样女生与田径组总人数的比是4：9．现在田径组有女生多少人？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">18 * (4/9)</gadget>
<output>8</output>

<gadget id="calculator">18 - 8</gadget>
<output>10</output>

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

<gadget id="calculator">(4/9) - (1/3)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">10 / (1/9)</gadget>
<output>90</output>

<gadget id="calculator">90 * (1/3)</gadget>
<output>30</output>

<gadget id="calculator">30 + 18</gadget>
<output>48</output>

<result>48</result>