car drives from place A to place B, travels the whole distance (5/8), and is still 243 kilometers away from place B. How long is the road between the two places?
一辆汽车从甲地开往乙地，行了全程的(5/8)，离乙地还有243千米．两地之间的公路长多少千米．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">243 / (3/8)</gadget>
<output>648</output>

<result>648</result>