A square iron block with a side length of 4 decimeters can be melted and cast into a cuboid iron bar with a cross-section of 4 square centimeters and a length of how many decimeters.
一个正方体铁块棱长4分米，能够熔铸成横截面是4平方厘米、长多少分米的长方体铁条．
<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">4 / (1/25)</gadget>
<output>100</output>

<gadget id="calculator">4 * 4 * 100</gadget>
<output>1_600</output>

<result>1_600</result>