A car departs from A to B, travels the entire distance (3/5), and exceeds the midpoint by 40 kilometers. How far is it from A to B?
一辆汽车从甲地出发开往乙地，行了全程的(3/5)，超过中点40千米．从甲地到乙地有多远？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/5) - (1/2)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">40 / (1/10)</gadget>
<output>400</output>

<result>400</result>