A rope is 3 meters long, if 1 meter is cut off, how many decimeters are left?
一根绳子长3米，剪去1米，还剩多少分米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<result>20</result>