A cube of iron with a side length of 40 cm is placed in a bucket full of water, how many liters of water will it overflow?
一个棱长40厘米的正方体铁块，全部放入盛满水的桶中，溢出多少升水？
<gadget id="calculator">40 / 1_000</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">40 * 40 * (1/25)</gadget>
<output>64</output>

<result>64</result>