There is some oil in a barrel, and the oil and the barrel weigh 100 kilograms. The first pour out of the oil (2/3); The total weight is 9 kg. How much does this bucket weigh?
一个桶装了一些油，油和桶共重100千克，第一次倒出油的(2/3)；第二次倒出余下的75%还多3千克，这时剩下的油和桶共重9千克，这个桶重多少千克？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/3) * (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/3) + (1/4)</gadget>
<output>11/12 = around 0.916667</output>

<gadget id="calculator">88 / (11/12)</gadget>
<output>96</output>

<gadget id="calculator">100 - 96</gadget>
<output>4</output>

<result>4</result>