Two cylindrical containers, A and B, have a ratio of bottom area of 5:3, the water depth of A container is 6 cm, and the water depth of B container is 4 cm, and then pour the same amount of water into the two containers until the water depths are equal, so that the water surface of B container How many centimeters does it rise?
甲、乙两个圆柱体容器，底面积之比为5：3，甲容器水深6厘米，乙容器水深4厘米，再往两个容器注入同样多的水，直到水深相等，这样乙容器的水面上升多少厘米？
<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">30 - 12</gadget>
<output>18</output>

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

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 - 4</gadget>
<output>5</output>

<result>5</result>