A cuboid fuel tank measures 8dm in length, 6dm in width, and 2.5dm in height. It has already filled 30L of gasoline. How many liters of gasoline can this tank hold at most?
一个长方体油箱，从里面量长8dm，宽6dm，高2.5dm，已经装进30L汽油，这个油箱最多还能再装多少升汽油？
<gadget id="calculator">8 * 6 * 2.5</gadget>
<output>120</output>

<gadget id="calculator">120 - 30</gadget>
<output>90</output>

<result>90</result>