A car drives from city A to city B. It has traveled (2/5) and there are still 60 kilometers away from city B. How many kilometers has this car traveled?
一辆汽车从A城开往B城，已行了(2/5)离B城还有60千米，这辆车行了多少千米千米．
<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">60 / (3/5)</gadget>
<output>100</output>

<gadget id="calculator">100 - 60</gadget>
<output>40</output>

<result>40</result>