A rectangular glass fish tank measures 5 decimeters in length, 3 decimeters in width, 4 decimeters in height and 25 centimeters in water depth. How big is the fish tank?
一个长方形玻璃鱼缸，从里面量长5分米，宽3分米，高4分米，水深25厘米，鱼缸的占地面积多大？
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>