Xiao Gang wanted to measure the volume of a stone. He took a rectangular parallelepiped glass container with a side length of 2 decimeters on the bottom and filled it with 3.6 liters of water. What is the volume of this stone?
小刚想测量一块石头的体积，他拿一个底面是边长为2分米的正方形的长方体玻璃容器，里面装有3.6升的水，再将石头浸没水中，这时容器中水深1.4分米，这块石头的体积是多少？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">3.6 / 4</gadget>
<output>0.9</output>

<gadget id="calculator">1.4 - 0.9</gadget>
<output>0.5</output>

<gadget id="calculator">2 * 2 * 0.5</gadget>
<output>2</output>

<result>2</result>