The carriage of a certain postal cargo is a cuboid, measured from the inside, is 3m long, 2.5m wide, and 2m high. What is its volume in cubic meters?
某邮政运货的车厢是长方体，从里面量长是3m，宽2.5m，高2m．它的容积的是多少立方米？
<gadget id="calculator">3 * 2.5 * 2</gadget>
<output>15</output>

<result>15</result>