In the last semester of Hongxing Primary School, there were more boys than girls (1/9). This semester, 15 girls transferred in, and 8 boys transferred out. As a result, the number of boys and girls was exactly equal. How many girls were there last semester?
红星小学上学期男生人数比女生人数多(1/9)，这学期女生转入15人，男生转出8人，结果男、女生人数正好相等．上学期女生有多少人？
<gadget id="calculator">15 + 8</gadget>
<output>23</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/9) - 1</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">23 / (1/9)</gadget>
<output>207</output>

<result>207</result>