A car travels the entire distance (1/5) from point A to point B, and then travels another 400 kilometers to reach it. How many kilometers are there between places A and B?
一辆汽车从甲地到乙地先行了全程的(1/5)，然后又行400千米正好到达，甲、乙两地相距多少千米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">400 / (4/5)</gadget>
<output>500</output>

<result>500</result>