There are two or three containers A and B, first pour (1/3) of the water in container A into container B, then pour (1/4) of the water in container B into container C, and finally pour (1/4) of the water in container C 10) Pour it into container A. At this time, the three containers contain 9 liters of water. How much is the original water in container A?
有甲乙两三个容器，先将甲容器里水的(1/3)倒入乙容器，再把乙容器里水的(1/4)倒入丙容器，最后丙容器里水的(1/10)倒入甲容器，这时三个容器都是9升水，甲容器原有水多少升．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">9 / (9/10)</gadget>
<output>10</output>

<gadget id="calculator">10 * (1/10)</gadget>
<output>1</output>

<gadget id="calculator">9 - 1</gadget>
<output>8</output>

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">8 / (2/3)</gadget>
<output>12</output>

<result>12</result>