Two pieces of rope of the same length, the first piece uses 12 meters, the second piece uses 18 meters, the remaining length of the first piece is 1.5 times the remaining length of the second piece. What is the total length of the two lengths of rope?
两段同样长的绳子，第一段用去12米，第二段用去18米，第一段剩下长度是第二段剩下长度的1.5倍．两段绳子共长多少米？
<gadget id="calculator">1.5 * 18</gadget>
<output>27</output>

<gadget id="calculator">27 - 12</gadget>
<output>15</output>

<gadget id="calculator">1.5 - 1</gadget>
<output>0.5</output>

<gadget id="calculator">15 / 0.5</gadget>
<output>30</output>

<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<result>60</result>