There is an airplane that can fly continuously in the air for 9 hours. The speed when it flies out is 740 kilometers per hour, and the speed when it returns is 925 kilometers per hour.
有一架飞机，能在空中连续飞行9小时，飞出时的速度是每小时740千米，返回时每小时925千米，这架飞机最多飞出多少千米就应返回．
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">9 * (5/9)</gadget>
<output>5</output>

<gadget id="calculator">5 * 740</gadget>
<output>3_700</output>

<result>3_700</result>