A and B are two cylindrical containers, the ratio of the bottom area is 3:5, the water depth of A container is 10 cm, and the water depth of B container is 9 cm, pour out the same amount of water from both containers until the water depths are equal, then the water level of B container drops how many centimeters?
甲乙两个圆柱体容器，底面积之比是3：5，甲容器水深10厘米，乙容器的水深9厘米，两个容器倒出同样多的水，直到水深相等，这时乙容器的水面下降多少厘米？
<gadget id="calculator">5 * 9</gadget>
<output>45</output>

<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">45 - 30</gadget>
<output>15</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">9 - (15/2)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>