The number of workers in the second workshop of a certain factory is 75% of the number of workers in the first workshop. After the first workshop recruits a few workers, the ratio of the number of workers in the first and second workshops is 7:4. After the second workshop recruits a few more workers, the first 1. The ratio of the number of people in the second workshop is 9:8. It is known that the second workshop recruits 5 more people, so how many people are there in the second workshop?
某工厂第二车间工人的人数是第一车间的75%，第一车间招若干个工人后，第一、二车间的人数比是7：4，第二车间再招若干个工人后，第一、二的车间的人数比是9：8，已知第二车间多招5个人，那么原来第二车间有多少人？
<gadget id="calculator">21 / 5</gadget>
<output>21/5 = around 4.2</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">(21/5) * (8/9)</gadget>
<output>56/15 = around 3.733333</output>

<gadget id="calculator">12 / 5</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">(56/15) - (12/5) - 1</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">5 / (1/3)</gadget>
<output>15</output>

<gadget id="calculator">15 * (12/5)</gadget>
<output>36</output>

<result>36</result>