A car has driven 60 kilometers from place A to place B, and 40% of the whole journey is left. How many kilometers are left?
一辆汽车从甲地开往乙地，已经行驶了60千米，还剩下全程的40%，求还剩多少千米？
<gadget id="calculator">40 / 100</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">60 / (3/5)</gadget>
<output>100</output>

<gadget id="calculator">100 * (2/5)</gadget>
<output>40</output>

<result>40</result>