A garment factory has to make 660 sets of adult clothes. Originally, each set used 2.5 meters of cloth. After improving the cutting method, each set saved 0.3 meters of cloth. How many sets of clothes can be made from the cloth used to make these clothes?
某服装厂要做660套成人衣服，原来每套用布2.5米，改进裁剪方法之后，每套节约0.3米布．原来做这些衣服用的布现在可以做几套衣服？
<gadget id="calculator">2.5 * 660</gadget>
<output>1_650</output>

<gadget id="calculator">2.5 - 0.3</gadget>
<output>2.2</output>

<gadget id="calculator">1_650 / 2.2</gadget>
<output>750</output>

<result>750</result>