freight train travels from place A to place B, traveling the entire distance (2/5), and there is still 36 kilometers away from the midpoint. How many kilometers are there between A and B?
一列货车从甲地开往乙地，行了全程的(2/5)，距中点还有36千米．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">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/2) - (2/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">36 / (1/10)</gadget>
<output>360</output>

<result>360</result>