A car drives from place A to place B. It has traveled (2/5), and the distance from place B is 18 kilometers. How many kilometers is the whole journey?
一辆汽车从甲地开往乙地，已行(2/5)，距离乙地18千米，全程多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">18 / (3/5)</gadget>
<output>30</output>

<result>30</result>