If A travels (2/3) of the total distance in (3/4) hours, how many hours will A have to travel to complete the total distance?
甲用(3/4)小时行了总路程的(2/3)，那么甲还要行多少小时才能走完总路程．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/3) / (3/4)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">(1/3) / (8/9)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>