Use a square of 1 square decimeter to measure a rectangle, and place exactly 8 pieces, what is the area of this rectangle in square decimeters?
用1平方分米的正方形去量一个长方形，正好摆放8个，这个长方形的面积是多少平方分米．
<gadget id="calculator">1 * 8</gadget>
<output>8</output>

<result>8</result>