A cuboid iron box with a square bottom, if you unfold its sides, you will get exactly a square with a side length of 40cm. What is the volume of this iron box in liters?
一只底面是正方形的长方体铁箱，如果把它的侧面展开，正好得到一个边长是40cm的正方形．求这只铁箱的容积是多少升？
<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<gadget id="calculator">40 / 1_000</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">10 * 10 * (1/25)</gadget>
<output>4</output>

<result>4</result>