There are two ropes A and B. The length of rope A is (5/6) that of rope B. After 13.5 meters of rope B is used up, 62.5% is left. How long is rope A in meters?
有甲、乙两根绳子，甲绳的长度是乙绳的(5/6)，乙绳用去13.5米后，还剩62.5%，甲绳长多少米？
<gadget id="calculator">62.5 / 100</gadget>
<output>0.625</output>

<gadget id="calculator">1 - 0.625</gadget>
<output>0.375</output>

<gadget id="calculator">13.5 / 0.375</gadget>
<output>36</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">36 * (5/6)</gadget>
<output>30</output>

<result>30</result>