and B have two candles, the length of B is 1.5 times that of A, A can light for 2 hours, and B can light for 1.5 hours. How many hours after the two candles are lit simultaneously will they be equal in length.
甲乙两支蜡烛，乙的长度是甲的1.5倍，甲能点2小时，乙能点1.5小时．同时点燃这两支蜡烛多少小时后它们的长度相等．
<gadget id="calculator">1.5 - 1</gadget>
<output>0.5</output>

<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1.5 * (2/3)</gadget>
<output>1</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">0.5 / (1/2)</gadget>
<output>1</output>

<result>1</result>