White sugar is 500 grams more than brown sugar, brown sugar is less than white sugar (2/5), how many grams is white sugar?
白糖比红糖多500克，红糖比白糖少(2/5)，白糖有多少克．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">500 / (2/5)</gadget>
<output>1_250</output>

<result>1_250</result>