A section of square steel is 40 decimeters long, and its cross section is a square with a side length of 5 decimeters. What is the volume of this section of square steel in cubic meters?
一段方钢长40分米，横截面是一个边长5分米的正方形，这段方钢的体积是多少立方米？
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">40 / 10</gadget>
<output>4</output>

<gadget id="calculator">(1/2) * (1/2) * 4</gadget>
<output>1</output>

<result>1</result>