A batch of cloth can be made into 20 pieces for tops, and 30 pieces for bottoms. According to this calculation, use this batch of cloth to make 5 coats first, how many sets of clothes can be made with the remaining cloth?
一批布，做上装可做20件，如果用来做下装可做30件．照这样计算，用这批布先做5件上装，剩下的布可以做多少套衣服？
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(1/20) * 5</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/20) + (1/30)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(3/4) / (1/12)</gadget>
<output>9</output>

<result>9</result>