cuboid with a square base, unfolding it sideways, the exact square with a side length of 28cm, what is the volume of this cuboid?
一个底面是正方形的长方体，把它侧面展开，恰好的边长为28cm的正方形，这个长方体的体积是多少？
<gadget id="calculator">28 / 4</gadget>
<output>7</output>

<gadget id="calculator">7 * 7 * 28</gadget>
<output>1_372</output>

<result>1_372</result>