In the first semester, the number of girls in Class 61 accounted for the whole class (5/12), and in the second semester, 4 girls were transferred. At this time, girls accounted for the whole class (6/13). How many students are there in the class now? (solution by equation)
六1班第一学期女生人数占全班人数的(5/12)，第二学期转入4名女生，这时女生占全班人数的(6/13)．现在全班学生有多少人？(用方程解)
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">4 * (5/12)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">4 - (5/3)</gadget>
<output>7/3 = around 2.333333</output>

<gadget id="calculator">6 / 13</gadget>
<output>6/13 = around 0.461538</output>

<gadget id="calculator">(6/13) - (5/12)</gadget>
<output>7/156 = around 0.044872</output>

<gadget id="calculator">(7/3) / (7/156)</gadget>
<output>52</output>

<result>52</result>