textile factory weaves 846 meters of curtain cloth, and the bed sheet cloth weaves is three times that of curtain cloth. How many meters longer is the woven bed sheet than the curtain?
一个纺织厂织出窗帘布846米，织出的床单布是窗帘布的3倍．织出的床单布比窗帘布多多少米？
<gadget id="calculator">846 * 3</gadget>
<output>2_538</output>

<gadget id="calculator">2_538 - 846</gadget>
<output>1_692</output>

<result>1_692</result>