A car drives from place A to place B. After driving the whole distance (3/8), there are still 400 meters left. How many kilometers are there between places A and B? (solution by equation)
一辆汽车从甲地开往乙地，行了全程的(3/8)后还有400米，甲乙两地之间有多少千米？(用方程解)
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">400 / (5/8)</gadget>
<output>640</output>

<result>640</result>