Pour 4.5 liters of water into a fish tank with a length of 5 decimeters, a width of 0.3 decimeters, and a height of 4 decimeters. How many decimeters will the water surface be from the side of the tank?
把4.5升的水倒入长5分米，宽0.3分米，高4分米的鱼缸，水面距缸边还有多少分米．
<gadget id="calculator">5 * 0.3</gadget>
<output>1.5</output>

<gadget id="calculator">4.5 / 1.5</gadget>
<output>3</output>

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

<result>1</result>