There is a batch of brown sugar and white sugar in a shopping mall. If the brown sugar increases (2/3), there will be as much white sugar. If the white sugar decreases (2/3), the remaining white sugar is 240 kg less than the brown sugar. How many kilograms of original sugar.
某商场有一批红糖和白糖，如果红糖增加(2/3)，就痛白糖一样多，如果白糖减少(2/3)，则剩下白糖比红糖少240千克．原有白糖多少千克．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(5/3) * (1/3)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (5/9)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">240 / (4/9)</gadget>
<output>540</output>

<gadget id="calculator">540 * (5/3)</gadget>
<output>900</output>

<result>900</result>