There are two ropes, the longer one is twice as long as the short one, now cut each rope by 6 decimeters, then the longer one is twice as long as the short one. What is the original length of the long rope?
有两根绳子，长的比短的长1倍，现在把每根绳子都剪掉6分米，那么长的一根就比短的一根长两倍．长绳子原来的长度是多少分米？
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">18 - 6</gadget>
<output>12</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 3</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) - 1</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">12 / (1/2)</gadget>
<output>24</output>

<result>24</result>