On Friday, the students went to the reading room to read books. Among the students who read books, female students accounted for 60%, and 5 female students left the reading room midway. At this time, among the students who read books, the ratio of female students to male students is 4 : 3. How many students are reading in the original reading room?
星期五同学们到阅览室去看书，看书的同学中，女同学占了60%，中途有5名女同学有事离开阅览室，这时，看书的同学中，女同学与男同学的人数比是4：3，原来阅览室一共有多少名同学在看书？
<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">(3/5) / (2/5)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">(3/2) - (4/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">5 / (1/6) / (2/5)</gadget>
<output>75</output>

<result>75</result>