There are two candles of the same length, the thick one can burn for 3 hours, and the thin one can burn for (8/3) hours. When there is a power outage, light two candles at the same time, and blow them out at the same time when the power comes in. The remaining length of the thick one is twice that of the thin one. Find the time of the power outage.
有两根同样长的蜡烛，粗的可燃3小时，细的可燃(8/3)小时．停电时，同时点燃两根蜡烛，来电时同时吹灭，粗的剩下的长度是细的剩下的2倍，求停电的时间．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">2 * (3/8)</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(3/4) - (1/3)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 / (5/12)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>