Pour 45 cubic decimeters of water into a fish tank with a length of 5 decimeters, a width of 3 decimeters, and a height of 4 decimeters.
把45立方分米的水倒入长5分米，宽3分米，高4分米的鱼缸内，水面距缸边还有多少分米．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">45 / 15</gadget>
<output>3</output>

<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<result>1</result>