The ratio of the number of people in the chorus team to the dance team in a certain school is 3:2. If 10 members of the chorus team are transferred to the dance team, the ratio is 7:8. How many people are there in the original chorus team?
某学校合唱队与舞蹈队的人数之比为3：2，如果将合唱队队员调10人到舞蹈队，则人数比为7：8，原合唱队有多少人？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">7 + 8</gadget>
<output>15</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(3/5) - (7/15)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">10 / (2/15)</gadget>
<output>75</output>

<gadget id="calculator">75 * (3/5)</gadget>
<output>45</output>

<result>45</result>