car has traveled the entire distance (3/5) from place A to place B, and it is still 30 kilometers away from place B. How many kilometers are there between places A and B?
一辆汽车从甲地开往乙地，已经行了全程的(3/5)，距离乙地还有30千米，甲乙两地相距多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 / (2/5)</gadget>
<output>75</output>

<result>75</result>