A garment factory has 1,200 meters of cloth, first make 120 sets of adult clothes, each set uses 4.5 meters of cloth, and the rest makes children's clothes, each set uses 3.3 meters of cloth, how many sets of children's clothes can be made? (solution by equation)
某服装厂有布1200米，先做大人服装120套，每套用布4.5米，剩下的做小孩衣服，每套用布3.3米，可以做小孩衣服多少套？(用方程解)
<gadget id="calculator">120 * 4.5</gadget>
<output>540</output>

<gadget id="calculator">1_200 - 540</gadget>
<output>660</output>

<gadget id="calculator">660 / 3.3</gadget>
<output>200</output>

<result>200</result>