The number of female students in a dance training class accounted for (7/12) of the total number of people, and later 15 female students joined, and at this time female students accounted for (3/5) of the total number. How many students were there in total in the training class?
某舞蹈培训班的女学员人数占总人数的(7/12)，后来又有15名女学员加入，这时女学员占总人数的(3/5)．培训班原来共有学员多少人？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) * 15</gadget>
<output>9</output>

<gadget id="calculator">15 - 9</gadget>
<output>6</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(3/5) - (7/12)</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">6 / (1/60)</gadget>
<output>360</output>

<result>360</result>