A car drives from place A to place B. It first travels 1/5 of the whole journey, and then travels 20% of the whole journey. At this time, it is still 15 kilometers away from the end point. How many kilometers are there between places A and B?
一辆汽车从甲地开往乙地，先走了全程的(1/5)，又走了全程的20%，此时离终点还有15千米，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">20 / 100</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">15 / (3/5)</gadget>
<output>25</output>

<result>25</result>