What is the area in square decimeters when 3 squares with sides of 5 decimeters are put together to form a rectangle?
把3个边长为5分米的正方形拼成一个长方形后，面积是多少平方分米
<gadget id="calculator">5 * 5 * 3</gadget>
<output>75</output>

<result>75</result>