There is a wire, 3 meters are used for the first time, exactly (1/4) of this wire, and (1/3) of this wire is used for the second time, how many meters are used for the second time?
有一根电线，第一次用去3米，正好占这根电线的(1/4)，第二次用去这根电线的(1/3)，第二次用去多少米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / (1/4)</gadget>
<output>12</output>

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

<gadget id="calculator">12 * (1/3)</gadget>
<output>4</output>

<result>4</result>