Recycling 1 kg of waste paper can produce 0.8 kg of recycled paper. If each person recycles 3.5 kg of waste paper, how many kg of recycled paper can be produced by 200 people?
回收1千克废纸，可生产0.8千克再生纸，如果每人回收3.5千克废纸，200人回收的废纸可以生产多少千克再生纸？
<gadget id="calculator">3.5 * 200</gadget>
<output>700</output>

<gadget id="calculator">0.8 * 700</gadget>
<output>560</output>

<result>560</result>