A cube fuel tank has a side length of 4.5 decimeters, and the weight of fuel per liter is 0.82 kg. How much is the weight of the whole tank of fuel?
一个正方体油箱，棱长4.5分米，每升油重0.82千克，求整箱油重多少千克？
<gadget id="calculator">4.5 * 4.5 * 4.5</gadget>
<output>91.125</output>

<gadget id="calculator">0.82 * 91.125</gadget>
<output>74.7225</output>

<result>74.7225</result>