A train has traveled (3/5) from place A to place B, and it is 450 kilometers away from place B. How many kilometers is the distance between places A and B?
一列火车从甲地开往乙地，已经行了(3/5)，离乙地还有450千米，甲乙两地之间的路程是多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">450 / (2/5)</gadget>
<output>1_125</output>

<result>1_125</result>