For two cylinders with equal base radii, the ratio of the height of the first cylinder to the height of the second cylinder is 4:5. The volume of the second cylinder is 60 cubic decimeters, what is the volume of the first cylinder?
两个底面半径相等的圆柱，第一个圆柱的高与第二个圆柱高的比是4：5．第二个圆柱的体积是60立方分米，第一个圆柱的体积是多少？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">60 / (5/4)</gadget>
<output>48</output>

<result>48</result>