A foundation is dug on a construction site. The length of the foundation is 100 meters, the width is 32 meters, and the depth is 2.5 meters. The excavated soil is used to pad the roadbed. If the width of the roadbed is 5 meters and the thickness is 2 decimeters, how long can the pad be at most?
一个建筑工地挖地基，地基长是100米，宽是32米，深是2.5米．挖出的土用来垫路基，如果路基的宽是5米，厚是2分米，最多可以垫多长？
<gadget id="calculator">100 * 32 * 2.5</gadget>
<output>8_000</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">5 * (1/5)</gadget>
<output>1</output>

<gadget id="calculator">8_000 / 1</gadget>
<output>8_000</output>

<result>8_000</result>