Among the students reading in the reading room, there are 10 more boys than girls. Later, the number of boys decreased (1/4), and the number of girls decreased (1/6). The remaining boys and girls were equal. How many girls were there in the original reading room?
阅览室看书的同学中，男生比女生的人数多10人，后来男生减少(1/4)，女生减少(1/6)，剩下的男、女生人数相等，原来阅览室有多少名女生？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">10 * (1/4)</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">10 - (5/2)</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/4) - (1/6) - 1</gadget>
<output>-11/12 = around -0.916667</output>

<gadget id="calculator">1 + (-11/12)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(15/2) / (1/12)</gadget>
<output>90</output>

<result>90</result>