The school's track and field team originally consisted of girls (1/3), and later 6 girls joined the track and field team. In this way, the total number of girls to the track and field team is 4:9. How many boys are there in the track and field team now?
学校田径队原来女生人数占(1/3)，后来又有6名女生加入田径队．这样女生与田径队的总人数比为4：9，现在田径队有男生多少人？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">6 * (4/9)</gadget>
<output>8/3 = around 2.666667</output>

<gadget id="calculator">6 - (8/3)</gadget>
<output>10/3 = around 3.333333</output>

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

<gadget id="calculator">(1/3) * (4/9)</gadget>
<output>4/27 = around 0.148148</output>

<gadget id="calculator">(4/9) - (4/27) - (1/3)</gadget>
<output>-1/27 = around -0.037037</output>

<gadget id="calculator">(4/27) + (-1/27)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(10/3) / (1/9)</gadget>
<output>30</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">30 * (2/3)</gadget>
<output>20</output>

<result>20</result>