There are two pools of goldfish, the mantissa ratio of pool A and pool B is 3:2, and 18 goldfish were fished out from pool A and put into pool B. The number of goldfish in pool A accounts for 45% of the number of goldfish in the two pools. How many goldfish are there in pool A and pool B?
有两池金鱼，甲池的尾数与乙池的尾数比是3：2，后来从甲池捞出18尾放进乙池．甲池的尾数占两池金鱼尾数的45%，甲，乙两池一共有金鱼多少尾？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(3/5) - (9/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">18 / (3/20)</gadget>
<output>120</output>

<result>120</result>