Two buckets of water have a total of 27 liters of water. After 3 liters of water in the small bucket are used up, the ratio of the remaining water to the water in the big bucket is 3:5. How much water is in the small bucket?
两桶水共有水27升．小桶里的水用去了3升后，剩下的水与大桶里的水的比是3：5，小桶里原有多少水？
<gadget id="calculator">27 - 3</gadget>
<output>24</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">24 * (3/8)</gadget>
<output>9</output>

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

<result>12</result>