A cylindrical plexiglass rod with a volume of 400 cubic centimeters and a base area of 4 cubic centimeters is cut into 5 sections on average, and the length of each section is how many centimeters.
一根圆柱形有机玻璃棒，体积是400立方厘米，底面积是4立方厘米，把它平均截成5段，每段长多少cm．
<gadget id="calculator">400 / 4 / 5</gadget>
<output>20</output>

<result>20</result>