Make a cuboid-shaped oil drum whose length, width, and height are 50 cm, 30 cm, and 20 cm respectively. How many liters of oil can it hold? (Iron sheet thickness is not counted)
做一个长、宽、高分别为50厘米、30厘米、20厘米的长方体形状的油桶，它能装多少升油？(铁皮厚度不计)
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">20 / 1_000</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">50 * 30 * (1/50)</gadget>
<output>30</output>

<result>30</result>