A car drives from place A to place B. When it travels 65% of the way, it just exceeds the midpoint of 30 kilometers. How many kilometers are there between places A and B?
一辆汽车从甲地开往乙地，当行完全程的65%时，正好超过中点30千米，甲乙两地相距多少千米？
<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(13/20) - (1/2)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">30 / (3/20)</gadget>
<output>200</output>

<result>200</result>