cube of steel with a side length of 40dm weighs about 5.8kg per cubic decimeter of steel. How many tons does this piece of steel weigh?
一块正方体的钢块，棱长为40dm，、每立方分米的钢材大约重5.8kg．这块钢重多少吨？
<gadget id="calculator">40 / 1_000</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">5.8 * 40 * 40 * (1/25)</gadget>
<output>371.2</output>

<result>371.2</result>