The ratio of the area of the base of cylinder A to cylinder B is 2:3, and the heights are equal. The area of the base of cylinder A is 30 square centimeters, and the height of cylinder A is 15 centimeters. Find the volume of cylinder B.
甲圆柱与乙圆柱的底面积之比为2：3，高相等，甲圆柱的底面积是30平方厘米，甲圆柱的高是15厘米．试求乙圆柱的体积．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">30 * (3/2)</gadget>
<output>45</output>

<gadget id="calculator">45 * 15</gadget>
<output>675</output>

<result>675</result>