(3/4) of the number of boys in a class is equal to (2/3) of the number of girls. Given that there are 3 more girls than boys, how many girls are there?
某班男生人数的(3/4)等于女生人数的(2/3)，已知女生比男生多3人，则女生有多少人．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/3) / (3/4)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1 - (8/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">3 / (1/9)</gadget>
<output>27</output>

<result>27</result>