A square billet with a side length of 4 decimeters is forged into a rectangular steel plate with a length of 32 cm and a width of 20 cm. How thick is the steel plate? (solution by equation)
把一块棱长4分米的正方体钢坯，锻造成长32厘米，宽20厘米的长方体钢板，这钢板有多厚？(用方程解)
<gadget id="calculator">4 * 10 * 4 * 10 * 4 * 10</gadget>
<output>64_000</output>

<gadget id="calculator">32 * 20</gadget>
<output>640</output>

<gadget id="calculator">64_000 / 640</gadget>
<output>100</output>

<result>100</result>