cube of stone has a side length of 4 decimeters and weighs about 2.7 kilograms per cubic meter. How many kilograms does this stone weigh?
一块正方体的石头，棱长是4分米，每立方米的石头大约重2.7千克，这块石头重有多少千克？
<gadget id="calculator">4 / 1_000</gadget>
<output>1/250 = around 0.004</output>

<gadget id="calculator">2.7 * 4 * 4 * (1/250)</gadget>
<output>0.1728</output>

<result>0.1728</result>