A cuboid gasoline barrel has a base area of 18 decimeters and a height of 5 decimeters. If 1 liter of gasoline weighs 0.75 kilograms, how many kilograms of gasoline can this barrel hold?
一个长方体的汽油桶，底面积是18平方分米，高是5分米．如果1升汽油重0.75千克，这个油桶可以装多少千克汽油？
<gadget id="calculator">18 * 5</gadget>
<output>90</output>

<gadget id="calculator">90 * 0.75</gadget>
<output>67.5</output>

<result>67.5</result>