A conical iron container has a bottom area of 1.2 decimeters and a height of 2.4 decimeters. When it is filled with water, pour it into a cylindrical container with the same bottom as the cone. Since there is a stone in the cylindrical container, the total water level after the water submerges the stone is 1.4 decimeters. What is the volume of the stone? ?
一个圆锥形铁皮容器，底面积是1.2平方分米，高是2.4分米．当它盛满水后倒入一个与这圆锥等底的圆柱形容器内，由于圆柱形容器内有一石块，所以水没过石块后总的水位高度是1.4分米，石块的体积是多少？
<gadget id="calculator">2.4 / 3</gadget>
<output>0.8</output>

<gadget id="calculator">1.4 - 0.8</gadget>
<output>0.6</output>

<gadget id="calculator">1.2 * 0.6</gadget>
<output>0.72</output>

<result>0.72</result>