There are 40 members in the chorus team of a certain school, 60% of whom are girls, and some girls are recruited. At this time, the ratio of girls to boys is 15:8. How many girls are recruited?
某校合唱队有40人，其中女生占60%，又招进来一些女生，这时女生与男生人数的比是15：8，招进来女生多少人？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15 + 8</gadget>
<output>23</output>

<gadget id="calculator">8 / 23</gadget>
<output>8/23 = around 0.347826</output>

<gadget id="calculator">(2/5) / (8/23)</gadget>
<output>23/20 = around 1.15</output>

<gadget id="calculator">40 * (23/20)</gadget>
<output>46</output>

<gadget id="calculator">46 - 40</gadget>
<output>6</output>

<result>6</result>