A square vegetable field has a perimeter of 24 meters. If its area is to be tripled, and one side is increased by 3 meters, how many meters should the other side be increased?
一块正方形菜地，周长是24米．如果要把它的面积扩大到原来的3倍，其中一条边增加3米，另一条边要增加多少米？
<gadget id="calculator">24 / 4</gadget>
<output>6</output>

<gadget id="calculator">6 + 3</gadget>
<output>9</output>

<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 * 6 * (1/3)</gadget>
<output>12</output>

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

<result>6</result>