A science class teacher asks students to measure the volume of an irregular object. A cuboid water tank is 12 decimeters long, 5 decimeters wide, and 8 decimeters high. The depth of the water in the tank is 3.5 decimeters, and the water depth is 5.7 decimeters after the object is put in. What is the volume of this irregular object in cubic decimeters?
一节科学课老师让学生测量一个不规则物的体积．一个长方体水槽长12分米，宽5分米，高8分米，水槽内水深3.5分米，物体放入后水深5.7分米，这个不规则物体的体积是多少立方分米？
<gadget id="calculator">5.7 - 3.5</gadget>
<output>2.2</output>

<gadget id="calculator">12 * 5 * 2.2</gadget>
<output>132</output>

<result>132</result>