car drives from place A to place B and travels the entire distance (4/9) in 4 hours. How many hours will it take to complete the rest of the journey?
一辆汽车从甲地开往乙地，4小时走了全程的(4/9)，余下的路程还需几小时走完？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (4/9)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(4/9) / 4</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(5/9) / (1/9)</gadget>
<output>5</output>

<result>5</result>