A garment factory originally needed 0.76 meters of cloth to make a coat, but later improved the technology, and each piece only needed 0.684 meters of cloth. It used to make 27 coats, how many more can it make now?
某服装工厂做一件上衣原来需要0.76米布，后来改进了技术，每件只需要0.684米布，原来做27件上衣用的布，现在可以多做多少件？
<gadget id="calculator">27 / 0.684</gadget>
<output>39.473684</output>

<gadget id="calculator">0.76 * 39.473684</gadget>
<output>30</output>

<gadget id="calculator">30 - 27</gadget>
<output>3</output>

<result>3</result>