A piece of iron wire, use the full length (1/2) for the first time, use up the full length (1/3) for the second time, use 5 meters more for the first time than the second time, and use it for the first time How many meters did you use?
一根铁丝，第一次用去全长的(1/2)，第二次用去全长的(1/3)，第一次用的比第二次用的多5米，第一次用去多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">5 / (1/6)</gadget>
<output>30</output>

<gadget id="calculator">30 * (1/2)</gadget>
<output>15</output>

<result>15</result>