In order to find out the volume of a solid iron ball, students in the mathematics interest group first filled a cuboid container with a length of 6 decimeters, a width of 4 decimeters, and a height of 5 decimeters with some water, and then completely submerged the solid iron ball in the water , Through measurement, the water level is 2.5 decimeters higher than before. What is the volume of this solid iron ball in cubic decimeters?
数学兴趣小组的同学为弄清一个实心铁球的体积，先给一个长6分米，宽4分米，高5分米的长方体容器中装了一些水，然后将实心铁球完全沉没在水中，通过测量，水面比原来升高了2.5分米．这个实心铁球的体积是多少立方分米？
<gadget id="calculator">6 * 4 * 2.5</gadget>
<output>60</output>

<result>60</result>