car drives from place A to place B. It travels the whole distance (1/5) in the first hour, and the remaining 12.5% in the second hour. At this time, it is still 40 kilometers away from the midpoint. How many kilometers are there between A and B?
一辆小汽车从甲地开往乙地，第一小时行了全程的(1/5)，第二小时行了余下的12.5%此时离中点还有40千米．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 / 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">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">(4/5) * 0.125</gadget>
<output>0.1</output>

<gadget id="calculator">(1/2) - (1/5) - 0.1</gadget>
<output>0.2</output>

<gadget id="calculator">40 / 0.2</gadget>
<output>200</output>

<result>200</result>