Xiaofang’s family fence forms a rectangular flower fence with a length of 7 meters and a width of 2.5 meters under the balcony. What is its area?
小芳家用篱笆在阳台下围成一个长7米，宽2.5米的长方形花栏，它的面积是多少？
<gadget id="calculator">7 * 2.5</gadget>
<output>17.5</output>

<result>17.5</result>