There is more water in bucket A than in bucket B (2/3), if bucket A pours out its amount to bucket B, the two buckets will have the same amount of water.
甲桶水比乙桶水多(2/3)，甲桶倒出它的多少给乙桶，两桶水就一样多．
<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">(5/3) - 1</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / (5/3) / 2</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>