There are two cylinders with the same base diameter, the height ratio is 7:4, the volume of the second cylinder is 24 cubic decimeters, what is the volume of the first cylinder?
有两个底面直径相等的圆柱，高的比是7：4，第二个圆柱的体积是24立方分米，第一个圆柱的体积是多少立方分米？
<gadget id="calculator">7 / 4</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">24 * (7/4)</gadget>
<output>42</output>

<result>42</result>