The school makes a batch of clothing, each set uses 3.2 meters, and can make 300 sets. Due to the improved cutting technology, each set can save 0.2 meters. If this batch of cloth is also used to make school uniforms, how many more sets can be made?
学校做一批服装，每套用3.2米，可以做300套，由于改进裁剪技术，每套可以节省0.2米，如果还用这批布做校服，可以多做多少套？
<gadget id="calculator">3.2 - 0.2</gadget>
<output>3</output>

<gadget id="calculator">300 / 3</gadget>
<output>100</output>

<gadget id="calculator">3.2 * 100</gadget>
<output>320</output>

<gadget id="calculator">320 - 300</gadget>
<output>20</output>

<result>20</result>