A cube fuel tank, the side length measured from the inside is 5 decimeters, if the fuel weighs 0.8 kg per liter, how many kilograms of fuel can this tank hold at most?
一个正方体油箱，从里面量棱长是5分米，如果每升油重0.8千克，这个油箱最多可装油多少千克？
<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<gadget id="calculator">0.8 * 125</gadget>
<output>100</output>

<result>100</result>