A car drives from place A to place B, and travels 30% of the journey, and there are still 140 kilometers away. How many kilometers are there between places A and B?
一辆汽车从甲地驶向乙地，行了全程的30%，离了还有140千米，甲乙两地相距多少千米？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">140 / (7/10)</gadget>
<output>200</output>

<result>200</result>