The first garment factory plans to use 2.2 meters of cloth for each set of children's clothing. Now the cutting method has been improved, and each set saves 0.2 meters of cloth. The cloth used to make 500 sets of this kind of children's clothing, how many sets can be made now?
第一套服装厂做儿童服装计划每套用布2.2米，现在改进了裁剪方法，每套节省布0.2米．原来做500套这种童装所用的布，现在可以做多少套？
<gadget id="calculator">2.2 * 500</gadget>
<output>1_100</output>

<gadget id="calculator">2.2 - 0.2</gadget>
<output>2</output>

<gadget id="calculator">1_100 / 2</gadget>
<output>550</output>

<result>550</result>