A car drives from place A to place B. It completes the journey (1/4) in the first hour and 20% of the journey in the second hour. At this time, the distance from the midpoint is still 9 kilometers away. How many kilometers apart?
一辆汽车从甲地开往乙地，第一小时行完全程的(1/4)，第二小时行完全程的20%，这时距离中点还差9千米，甲、乙两地相距多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/2) - (1/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">9 / (1/20)</gadget>
<output>180</output>

<result>180</result>