cuboid fish tank measures 6 decimeters in length, 4 decimeters in width and 4.5 decimeters in height from the inside, and the water surface is 1 decimeter away from the mouth of the tank. How many liters of water is there in the tank?
一个长方体鱼缸，从里面量得长6分米、宽4分米、高4.5分米，水面离缸口边1分米，鱼缸内有水多少升？
<gadget id="calculator">4.5 - 1</gadget>
<output>3.5</output>

<gadget id="calculator">6 * 4 * 3.5</gadget>
<output>84</output>

<result>84</result>