An airplane flies 720 kilometers per hour, and flies (2/3) of the whole journey in (5/6) hours. How many kilometers is the whole journey?
一架飞机每小时飞行720千米，(5/6)小时飞行了全程的(2/3)．全程有多少千米？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">(5/6) / (2/3)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">720 * (5/4)</gadget>
<output>900</output>

<result>900</result>