There is 12 liters of pure alcohol in a container. After pouring out 3 liters, fill it up with water, then pour out 6 liters, then fill it up with water, then pour out 9 liters, and then fill it up with water. Find the volume of the alcohol solution in the container at this time What is the concentration?
一个容器内装有12升纯酒精，倒出3升后，用水加满，再倒出6升，再用水加满，然后倒出9升，再用水加满，求这时容器内的酒精溶液的浓度是多少？
<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<gadget id="calculator">9 / 12</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 - 6</gadget>
<output>6</output>

<gadget id="calculator">6 / 12</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) * (1/2)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">12 - 9</gadget>
<output>3</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(3/8) * (1/4) * 1</gadget>
<output>3/32 = around 0.09375</output>

<result>3/32 = around 0.09375</result>